2021 Official Baseball Rules
OFFICIAL BASEBALL RULES 2021 Edition Official Baseball Rules 2021 Edition OFFICIAL PLAYING RULES COMMITTEE Alex Anthopoulos Jerry Dipoto Michael Hill, Chair Chris Antonetti Joe Finley John Mozeliak Jon Daniels Brian Gorman David Stearns Amateur Baseball Advisory Member Mike Gaski Committee Secretary Paul V. Mifsud, Jr. Copyright © 2021 by the Office of the Commissioner of Baseball All rights reserved. No part of the Official Baseball Rules may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system now known or to be invented, without permission in writing from the Office of the Commissioner of Baseball. The Major League Baseball silhouetted batter logo is a registered trademark of Major League Baseball Properties, Inc. Cover photo by Alex Trautwig/MLB Photos. ISBN 978-1-62937-893-0 Printed in the United States of America ii OFFICIAL BASEBALL RULES Recodified, amended and adopted by the Professional Baseball Playing Rules Committee at New York, N.Y., December 21, 1949; amended at New York, N.Y., February 5, 1951; Tampa, Fla., March 14, 1951; Chicago, Ill., March 3, 1952; New York, N.Y., November 4, 1953; New York, N.Y., December 8, 1954; Chicago, Ill., November 20, 1956; Tampa, Fla., March 30-31, 1961; Tampa, Fla., November 26, 1961; New York, N.Y., January 26, 1963; San Diego, Calif., December 2, 1963; Houston, Tex., December 1, 1964; Columbus, Ohio, November 28, 1966; Pittsburgh, Pa., December 1, 1966; Mexico City, Mexico, November 27, 1967; San Francisco, Calif., December 3, 1968; New York, N.Y., January 31, 1969; Fort Lauderdale, Fla., December 1, 1969; Los Angeles, Calif., November 30, 1970; Phoenix, Ariz., November 29, 1971; St.
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