6 WEEK PROGRAM a Step-By-Step Program That Will Help You Become a T20 Strike Weapon
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The Swing of a Cricket Ball
SCIENCE BEHIND REVERSE SWING C.P.VINOD CSIR-National Chemical Laboratory Pune BACKGROUND INFORMATION • Swing bowling is a skill in cricket that bowlers use to get a batsmen out. • It involves bowling a ball in such a way that it curves or ‘swings’ in the air. • The process that causes this ball to swing can be explained through aerodynamics. Dynamics is the study of the cause of the motion and changes in motion Aerodynamics is a branch of Dynamics which studies the motion of air particularly when it interacts with a moving object There are basically four factors that govern swing of the cricket ball: Seam Asymmetry in ball due to uneven tear Speed Bowling Action Seam of cricket ball Asymmetry in ball due to uneven tear Cricket ball is made from a core of cork, which is layered with tightly wound string, and covered by a leather case with a slightly raised sewn seam Dimensions- Weight: 155.9 and 163.0 g 224 and 229 mm in circumference Speed Fast bowler between 130 to 160 KPH THE BOUNDARY LAYER • When a sphere travels through air, the air will be forced to negotiate a path around the ball • The Boundary Layer is defined as the small layer of air that is in contact with the surface of a projectile as it moves through the air • Initially the air that hits the front of the ball will stick to the ball and accelerate in order to obtain the balls velocity. • In doing so it applies pressure (Force) in the opposite direction to the balls velocity by NIII Law, this is known as a Drag Force. -
Cricket Injuries
CRICKET INJURIES Cricket can lead to injuries similar to those seen in other sports which involve running, throwing or being hit by a hard object. However, there are some injuries to look out for especially in cricket players. Low Back Injuries A pace bowler can develop a stress fracture in the back. This can develop in the area of the vertebra called the pars interarticularis (“pars”) in players aged 12- 21. Parsstress fractures are thought to be caused by repetitive hyper-extension and rotation of the spine that can occur in fast bowling. The most common site is at the level of the 5th lumbar vertebra (L5). Risk Factors Factors in bowling technique that are thought to increase the risk of getting a pars stress fracture are: • Posture of the shoulders and hips when the back foot hits the ground: completely side-on and semi-open bowling actions are the safest. A mixed action (hips side-on and shoulders front-on or vice versa) increases the risk of injury. Interestingly, recent research is suggesting the completely front-on action may be unsafe as rotation of the spine tends to occur in the action following back foot impact. Up until now, front-on was thought to be the safest. • Change in the alignment of the shoulders or of the hips during the delivery stride. • Extended front knee at front foot contact with the ground. • Higher ball release height. The other general risk factor for injuries in bowlers is high bowling workload: consecutive days bowling and high number of bowling sessions per week. -
Bowling Performance Assessed with a Smart Cricket Ball: a Novel Way of Profiling Bowlers †
Proceedings Bowling Performance Assessed with a Smart Cricket Ball: A Novel Way of Profiling Bowlers † Franz Konstantin Fuss 1,*, Batdelger Doljin 1 and René E. D. Ferdinands 2 1 Smart Products Engineering Program, Centre for Design Innovation, Swinburne University of Technology, Melbourne 3122, Australia; [email protected] 2 Department of Exercise and Sports Science, Faculty of Health Sciences, University of Sydney, Sydney 2141, Australia; [email protected] * Correspondence: [email protected]; Tel.: +61-3-9214-6882 † Presented at the 13th conference of the International Sports Engineering Association, Online, 22–26 June 2020. Published: 15 June 2020 Abstract: Profiling of spin bowlers is currently based on the assessment of translational velocity and spin rate (angular velocity). If two spin bowlers impart the same spin rate on the ball, but bowler A generates more spin rate than bowler B, then bowler A has a higher chance to be drafted, although bowler B has the potential to achieve the same spin rate, if the losses are minimized (e.g., by optimizing the bowler’s kinematics through training). We used a smart cricket ball for determining the spin rate and torque imparted on the ball at a high sampling frequency. The ratio of peak torque to maximum spin rate times 100 was used for determining the ‘spin bowling potential’. A ratio of greater than 1 has more potential to improve the spin rate. The spin bowling potential ranged from 0.77 to 1.42. Comparatively, the bowling potential in fast bowlers ranged from 1.46 to 1.95. Keywords: cricket; smart cricket ball; profiling; performance; skill; spin rate; torque; bowling potential 1. -
Sport Terminology
SPORT TERMINOLOGY Baton, bell lap, decathlon, discus, false start, field, foul, hammer, heptathlon, high jump, hurdles, javelin, lane, lap, long jump, marathon, middle-distance, pole-vault, relay, record, shot put, sprint, starting blocks, steeplechase, track, track and field, Athletics triple jump, Cross Country, etc. Alley, Back Alley, Backcourt, Balk, Baseline, Carry, Center or Base Position, Center Line, Clear, Court, Drive, Drop, Fault, Feint, Flick, Forecourt, Hairpin Net Shot, Halfcourt Shot, Kill, Let, Long Service Line, Match, Midcourt, Net Shot, Push Shot, Racquet, Rally, Serve, Service Court, Short Service Line, Shuttlecock, Smash, Badminton Wood Shot etc. Baseball Pinching, Home run, Base runner, Throw, Perfect game, Strike, Put out, etc. Cue, cannon, baulk, pot scratch, long jenny, short jenny, frame, spider, short and Billiards long rest, in-off, etc. Accidental Butt, Bleeder, Bolo Punch, Bout, Brawler, Break, Buckle, Canvas, Card, Caught Cold, Clinch, Corkscrew Punch, Cornerman, Counterpunch, Cross, Cutman, Dive, Eight Count, Glass Jaw, Haymaker, Kidney Punch Liver Shot, Low Blow, Mauler, Neutral Corner, Plodder, Ring Generalship, Roughhousing, Southpaw, Spar, Boxing Stablemate, Technical Knockout, Walkout Bout, Whiskers etc. Contract bridge, duplicate bridge, tricks, suite , rubber, trump, grand slam, little Bridge slam, etc. Billiards & Snooker Pull, Cue, Hit, Object ball, Break shot, Scoring, Cushion billiards, etc. , etc. Knock. out, Round, Ring Stoppage, Punch, Upper-cut, Kidney punch, Timing, Foot Boxing work, etc. Chess Gambit, stalemate, move, resign, checkmate, etc. Hat-trick, maiden, follow-on, declare, bowled, caught, run-out, leg before wicket(LBW), stumped, striker, slips, gully, short leg, silly, mid-on, point, cover, Cricket mid-off, bouncer, beamer, googly, full toss, drive, cut, pull, hook, flick, etc. -
T20 Rules Cheat Sheet
T20 Rules Cheat Sheet ON CALL UMPIRE CONTACTS POWER PLAY Ramesh Ailaveni 480-252-0243 Overs in Innings Power Play Overs Unmil Patel 952-393-6992 19-20 6 Abhijeet Surve 651-983-5502 15-18 5 Tulsie 952-250-4178 12-14 4 SriKrishnan 612-345-1779 9-11 3 Nitin Reddy Pasula 214-226-7768 5-8 2 Basic Rules 1. During power play only 2 fielders are permitted to be outside 30 yards, fielders in catching position not required. 2. During non power play no more than 5 fielders can be outside 30 yards. 3. A batsmen can be out on free hit, if he is run out or handled the ball or hit the ball twice or obstructs the field. 4. Apply duck-worth for any interruption that requires over reductions. 5. A minimum of 5 overs constitutes a match. 6. Play can be extended beyond scheduled cut off , if there is enough light just to complete minimum overs to get a result. 7. Beamer 1. A delivery which is other than a slow paced one and passes on the full above waist height or 2. A delivery which is slow paced and passes on the full above shoulder. 3. First instance of beamer is called no ball with warning. Second instance any time in the innings is called no ball and bowler can not bowl further in that innings. 8. Bouncer - above shoulder height but not above the head. Bouncer above head is called wide. 1. If bowled in same over 1. first one allowed, second one no ball with first warning, third one no ball with final warning, fourth one no ball and bowler can not bowl further in that innings. -
KCL USA Stamp
KERALA CRICKET LEAGUE Umpire Cheat Sheet Item Description Ground Setup Matting, Boundary/30-yard circle markings should have been completed 15 minutes before scheduled start time Playing 11 Collect names of playing 11 from both teams before start of play and verify photo IDs, if required Toss time is 15 minutes before scheduled start time. Visitors call the toss. Teams not having 7 players (in Toss colored jersey) on the field by scheduled game time will automatically forfeit the toss. Total Play time 4.8 Minutes Per Over. 120 Minutes per innings for a full 25 over game. Drinks Break 5 minutes drinks break at the end of 13th/12th over. Innings Break 15 minutes break at the end of first innings Boundary is a straight line between two adjacent cones. Confirm with both teams about runs/boundaries, if there Boundaries Are any goal posts/trees in the ground. Overs Per Bowler Maximum overs per bowler = Total overs Played/5. In a full 25 overs game, one bowler can bowl a max of 5 overs. Fielding teams will provide balls for their innings. Please make the ball has KCL USA stamp. Only one new ball Balls can be used per innings. If balls are lost during the game, use similar old balls. Minimum 4 players should be inside 30-yard circle at all times. Maximum 5 players on the leg side and 2 players Field Restrictions behind square leg (excluding wicket Keeper). Mandatory PP: First 7 overs: minimum 9players should be inside & Power Play 30-yard circle. There will no batting or bowling PP. -
Bowling Skills
Bowling Skills Presented By Clinton Kempnich Valley Junior Coaching Director Level 3 CA Coach General issues for seam and spin The approach/run in, try to stay: •Smooth •Balanced •Economical •Rhythmical •Consistent •stay relaxed and try not to tense up. Angle of run up • Quicks/mediums‐ straight but angles and positions within the crease are can be used to effect. • Spinners ( personal choice and style but body pivot and position need to be considered) Tactics and plans • Warm ups • Direction‐ where to bowl? • Ball care • Build an over • Field settings Junior FAQ’s He throws but cannot get the concept of bowling, what do I do? The bowler skips twice before release? The bowler bowls 4 good balls and 2 “4” balls an over, why? Styles San Cincinnati Reds, Chapman 105 MPH Not so perfect - quick but Perfect but unusual and (168KPH) injured real quick , not injured. 160.58 km/h – 180 KPH anecdotal Direction • Front on • Side on • Mixed • All angles Forces at work • The faster the bowler runs into the wicket, the greater their physical conditioning needs to be to withstand the ground reaction forces (GRFs), in particularly at front foot contact. This can be anywhere between five to ten times the body weight (BW) of the bowler for each delivery. • Spondylolysis is an overuse injury that effects the hard tissue of the lower spine, specifically the lumbar. As seen in this picture, there is a fracture in the bone of the lumbar, thus meaning that it is a hard tissue injury. Action ‐ aspects to monitor • Aim to keep your head as steady and level as possible, looking towards your target. -
Biomechanics in Testing the Legality of a Bowling Action in Cricket
BIOMECHANICS IN TESTING THE LEGALITY OF A BOWLING ACTION IN CRICKET David Lloyd, Jacque Alderson and Bruce Elliott Department of Human Movement and Exercise Science The University of Western Australia, Perth, Australia Movement analysis in sport and leisure is clearly the domain of the sports biomechanist. Technique modifications to improve performance or reduce the incidence of injury are currently administered. However, the analysis of sporting movements, from a legal perspective, is a more recent development. This paper discusses the procedures used in testing the legality of actions used in bowling in cricket. KEY WORDS: motion analysis, cricket, Vicon INTRODUCTION: The current no ball law in cricket with reference to throwing states: “the arm should not be straightened in the part of the delivery that immediately precedes ball release” The sport biomechanist in assessing the legality of a bowling action must first decide on the design of the analysis protocol. Questions that need to be answered before deciding on this protocol are: Is movement analysed in a laboratory setting representative of what occurs in the game environment? Also, are athletes capable of changing their action to comply with regulations when being filmed in a laboratory environment? Does the lack of accuracy in determining joint centres under baggy clothing worn in match conditions, lead to uncertainty about the error in the collected data? The laws of the game must also be read from both a “spirit of the game” and a biomechanical perspective. In fast bowling the phrase “immediately before delivery” must be interpreted from both those perspectives. This paper will show how the Sri Lankin spin bowler Muttiah Muralitharan on being “called for throwing” was analysed within the biomechanics laboratory of the Department of Human Movement and Exercise Science. -
A Multidisciplinary Examination of Fast Bowling Talent Development in Cricket
A MULTIDISCIPLINARY EXAMINATION OF FAST BOWLING TALENT DEVELOPMENT IN CRICKET Elissa Jane Phillips BPhEd & MSc (Hons) Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy School of Human Movement Studies Faculty of Health Queensland University of Technology 2011 ii Keywords Biomechanics, cricket, dynamical systems theory, degeneracy, expertise, fast bowling, skill acquisition, metastability, multidisciplinary, talent development, variability. iii iv Abstract Research on expertise, talent identification and development has tended to be mono-disciplinary, typically adopting geno-centric or environmentalist positions, with an overriding focus on operational issues. In this thesis, the validity of dualist positions on sport expertise is evaluated. It is argued that, to advance understanding of expertise and talent development, a shift towards a multidisciplinary and integrative science focus is necessary, along with the development of a comprehensive multidisciplinary theoretical rationale. Dynamical systems theory is utilised as a multidisciplinary theoretical rationale for the succession of studies, capturing how multiple interacting constraints can shape the development of expert performers. Phase I of the research examines experiential knowledge of coaches and players on the development of fast bowling talent utilising qualitative research methodology. It provides insights into the developmental histories of expert fast bowlers, as well as coaching philosophies on the constraints of fast bowling expertise. Results suggest talent development programmes should eschew the notion of common optimal performance models and emphasize the individual nature of pathways to expertise. Coaching and talent development programmes should identify the range of interacting constraints that impinge on the performance potential of individual athletes, rather than evaluating current performance on physical tests referenced to group norms. -
Suspect Bowling Action Report Form
Rm 1019 Olympic House, 1 Stadium Path, So Kon Po, Causeway Bay, Hong Kong ⾹港銅鑼灣掃桿埔⼤球場徑 一號 奧運⼤樓 1019室 T +852 2504 8190 F +852 2577 8486 E [email protected] Suspected Illegal Bowling Action - Match Officials Report This form should be completed by the umpire(s) when they suspect that a bowler is bowling with an illegal bowling action. Section 1 - Match Information Match: V Date: Venue / Location Match Officials 1 - On-Field Umpire (list where relevant) 2 - On-field Umpire 3 - Reserve Umpire Section 2 - Bowler Information Name: Club Bowling Arm: Left Arm Bowler Right Arm Bowler Bowling Type: Section 3 - Suspect Delivery Details Suspect Delivery Type Examples of Delivery (See Reference as guide) (“All” or Identify select overs/balls) CRICKET HONG KONG LIMITED (incorporated with limited liability) www.hKcricKet.org Rm 1019 Olympic House, 1 Stadium Path, So Kon Po, Causeway Bay, Hong Kong ⾹港銅鑼灣掃桿埔⼤球場徑 一號 奧運⼤樓 1019室 T +852 2504 8190 F +852 2577 8486 E [email protected] Reference for Match Officials Bowling Type Delivery Examples Pace Standard Delivery - Yorker, Good length & Bouncer Specific Variations - Off cutter - Leg cutter - Slower ball - Other Off Spin / Orthodox Standard delivery - Off breaK Specific Variations - Doosra - Arm ball - Quicker ball - Carrom ball - Other Leg Spin / Chinaman Standard Delivery - Leg BreaK Specific Variations - Googly - Flipper - Top Spinner - Other Section 4 - Reporting Match Officials Match Official Signed Date 1 2 3 The form shall also be emailed, by the CHK Umpires, to [email protected] within 24 Hours of the conclusion of the match in which the player is reported CRICKET HONG KONG LIMITED (incorporated with limited liability) www.hKcricKet.org . -
The Determinants and Development of Fast Bowling Performance in Cricket
The Determinants and Development of Fast Bowling Performance in Cricket Simon A. Feros This thesis is submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy (Human Movement) School of Health Sciences Federation University Australia P.O. Box 663 University Drive, Mount Helen Ballarat Victoria 3353 Australia Submitted September 2015 Page | i Abstract This thesis sought to reveal the physical and kinematic determinants of pace bowling performance. After drawing on these determinants, a secondary aim was to investigate whether pace bowling performance could be enhanced with chronic resistance training and warm-up strategies. However, before the physical and kinematic determinants of pace bowling performance could be identified, and the effects of two training interventions and warm-ups on pace bowling performance, a new pace bowling test was created, and the test-retest reliability of its performance and kinematic measures were evaluated. Knowledge of a variables’ test-retest reliability is important for interpreting the validity of correlations, but also for the determination of a meaningful change following a training intervention. Only one published study to date has explored the test-retest reliability of a pace bowling assessment, and this test only measured bowling accuracy (1). Previous research has not comprehensively examined the relationships between physical qualities and pace bowling performance. Several important physical qualities (e.g., power, speed-acceleration, flexibility, repeat-sprint ability) have been excluded in correlational research, which may be crucial for optimal pace bowling performance. Furthermore, there is only one published training intervention study on pace bowling research (2). Consequently there is scant evidence for coaches to design training programs proven to enhance pace bowling performance. -
Pizza, Pints & Peri Peri
Pizza, pints & peri peri FIRST INNINGS Jalapeno sweetcorn fritters, tomato salsa (GF/VG) £5.5 Garlic pizza bread (GFO/VG) £5 Salt & pepper squid, lemon aioli £6.5 Cheesy garlic pizza bread (GFO/V/VGO) £5.5 Rose Harissa halloumi, grilled aubergine (V) £6 The Cricketers peri peri chicken wings (GFO) £6.5 On the GRILL… Miguel’s Peri Peri Chicken Chef Miguel’s family recipe passed down from his Portuguese grandmother. Lightly spiced & packed with flavour… ½ Peri peri chicken & skin on fries (GFO) £13 Peri peri halloumi & cous cous salad, mango Peri peri chicken & cous cous salad, mango & lime dressing £11 & lime dressing (V) £10.5 Peri peri chicken fillet burger, lettuce, perinaise Grilled halloumi burger, roasted red pepper, flat mushroom, perinaise, lettuce, skin on fries (GFO/V) £11 & skin on fries (GFO) £11.5 Miguel’s peri peri FEAST… ¼ Chicken & 4 wings marinated in chef Migs famous peri peri sauce, beef hanger steak, onion rings, served with perinaise fries, tomato & red onion salad £18.5 CRICKETERS CLASSICS The Cricketers BBQ glazed pork belly ribs, skin on fries, house salad (GFO) £14.5 Chargrilled beef burger, chipotle mayo, Monteray Jack cheese, gherkin, lettuce, skin on fries (GFO) £12 (+streaky bacon £1) Crispy tofu, tenderstem broccoli, chilli & lemon, radish, sesame seeds & Yutaka soba noodles (VG) £12 Beer battered haddock fillet, hand cut chips, peas & tartare sauce (GFO) £12.5 King prawn & Cromer crab linguine, chilli, cherry tomatoes, rocket & shaved parmesan £13.5 28 day aged Woodview farm beef hanger steak, onion rings, fries & green peppercorn sauce (GFO) £14.5 VG - Vegan VGO – Vegan option available V - Vegetarian GF - Gluten Free GFO – Gluten Free option available.