The second perfect game was thrown by John Montgomery Ward for the Providence Grays.
Ward, an excellent pitcher who became an excellent position player, went on to be inducted into the Baseball Hall of Fame.
Two other crucial rules changes had been made in recent years: In 1887, the rule awarding a hit batsman first base was instituted in the National League (this had been the rule in the American Association since 1884: first by the umpire's judgment of the impact; as of the following year, virtually automatically).
Thus, from 1893 on, pitchers sought perfection in a game whose most important rules are the same as today, with two significant exceptions: counting a foul ball as a first or second strike, enforced by the National League as of 1901 and by the American League two years later, and the use of the designated hitter in American League games since the 1973 season.
During baseball's modern era, 21 pitchers have thrown perfect games. Six have been inducted into the Baseball Hall of Fame: Cy Young, Addie Joss, Jim Bunning, Sandy Koufax, Catfish Hunter, and Randy Johnson.
Roy Halladay won two Cy Young Awards and was named to eight All-Star teams.
there have been 23 official perfect games by current definition. The perfect game thrown by Don Larsen in game 5 of the 1956 World Series is the only postseason perfect game in major league history and one of only two postseason no-hitters.
The first two major league perfect games, and the only two of the premodern era, were thrown in 1880, five days apart.
The most recent perfect game was thrown on August 15, 2012 by Félix Hernández of the Seattle Mariners.
There were three perfect games in 2012, with no other year ever having more than two thrown.
By contrast, there have been spans of 23 and 33 consecutive seasons in which not a single perfect game was thrown.