List of Major League Baseball record breakers by season

The following is a list of records for a game, season, or career that were broken in each Major League Baseball season by players, teams, or others. This does not include dates when additional stats were recorded by the same player above one's own record set (unless broken by someone else in between) or records by a team that do not lead the majors. Some of the records were subsequently broken by others:

1897
July 12: Most inside-the-park home runs in a game: 3 by Tom McCreery

1932
July 10: Most hits in a game by a batter: 9 by Johnny Burnett

1999
April 23: Most grand slams hit in one inning: 2 by Fernando Tatis Most grand slams surrendered in one inning: 2 by Chan Ho Park

2008

 * April 2: Most consecutive games without an error for a first baseman: 194 by Kevin Youkilis; later extended to 238 games
 * May 9: Most baserunners picked off, career: 92 Kenny Rogers (since stat was first recorded in 1974)
 * May 16: Most consecutive starts with a no-decision: 9 by Shawn Chacón

2009

 * June 17: Most games caught: 2227 by Iván Rodríguez