Turning an unassisted triple play
Pitching an immaculate inning
Striking out 20 batters in a single game
Two grand slams in one game
Four strikeouts in an inning
Position players pitching
Hitting four home runs in a game
Knocking in ten runs in a game
Homering on first pitch faced in the major leagues
Stealing for the cycle in one inning
Stealing six bases in a single game
Getting on base in 17 consecutive plate appearances
Getting a hit in 12 consecutive at bats
Hitting a home run in eight consecutive games
Hitting fifty home runs in a season
Winning a league batting title
Hitting streaks of 40+ games
Winning the triple crown (as a batter)
Stealing 100 bases in a season
Striking out 300 batters in a season
Winning 30 games in a season
Pitching 50+ consecutive scoreless innings
Winning the triple crown (as a pitcher)
Saving 50 games in a season.
