Only events occurring within a single plate appearance, inning, or game are included; cumulative or aggregate records achieved over more than one game are not listed.
Events occurring during post-season play are included, but events occurring during an All-Star Game are not included.
As unusual as this number may seem, the bid for the perfect game on May 26, 1959 was lost when the Braves 37th batter, Felix Mantilla, led off the 13th inning by reaching first on an error by Pirate's 3rd baseman Don Hoak.
↑This unique feat has been overshadowed by the fact that during the very same game, Lou Gehrig became the first player in the American League to ever hit 4 home runs in a single game.
↑As of 2002. This event was much more common before the modern era (i.e. the turn of the 20th century); there have been only 40 inside-the-park grand slams since 1950.)
↑This may seem impossible. However, a sacrifice fly can be awarded without an out being recorded, if the fielder in question commits an error.
↑This may seem impossible. However, by definition a perfect game requires more than simply retiring the first 27 batters in order; it also requires that the pitcher's team's wins, and that the pitcher complete the entire game. See perfect game for more details.
↑These four events may be the only times in the history of baseball when a team has deliberately and with premeditation allowed a run to score by the opposing team for strategic purposes. It is true that there are cases where a particular choice of defensive alignment may make scoring more likely, and there are cases where decisions made in the moment of play allow a run to score in exchange for other strategic purposes, but intentionally walking in a run is clearly in a different class of strategic maneuver. This may also have occurred if a pitcher was instructed to deliberately hit a batter with the bases loaded, but in this case, intention is not provable.
↑The Baseball Almanac reports the most consecutive strikeouts as 8 in the American League, achieved by 5 pitchers, and as 10 in the National League. This does not exclude the possibility other National League pitchers achieved 8 or 9 strikeouts.
↑ 8.08.1This may seem impossible. However, a strikeout can be recorded on a batter who reaches first base safely under a dropped third strike. If strike three is recorded on the batter but the catcher does not catch the ball to complete the putout (likely due to a wild pitch or passed ball, and first base is unoccupied, the batter may advance to first. The pitcher is credited with a strikeout, but no out is recorded.
↑The Baseball Almanac states that 16 pitchers have accomplished this feat. Of these, all but Chuck Finley have only once struck out 4 batters in a single inning (consecutively or otherwise). Finley however did it 3 times, but the Baseball Almanac does not state how many of those were consecutive strikeouts (ie, whether it was once, twice, or all 3 times).
↑Some sources do not include the two perfect games thrown in the 19th century, due to differences in the rules of play, and thus list only fifteen perfect games.
↑There is some debate about whether a 13th unassisted triple play occurred in 1878. Under modern rules, the play was simply a double play, but at the time, it was considered a triple play. See unassisted triple play for more details.
↑The Baseball Almanac states that this event has occurred 46 times, but it lists 48 occurrences. Presumably, the total of 46 was taken before 1996 and this number has not been updated since.
