On May 29, 2010, Roy Halladay of the Philadelphia Phillies pitched the twentieth perfect game in Major League Baseball history, against the Florida Marlins in Sun Life Stadium. He retired all 27 batters, striking out 11. This was the first time in the modern era that two pitchers (Dallas Braden of the Oakland Athletics being the other) threw perfect games in the same month and that multiple perfect games had been achieved in the same season. Background Halladay's early career Roy Halladay's rookie season in 1999 featured 3.92 ERA in innings for the Toronto Blue Jays. In his second year, he finished with an ERA of 10.64, the worst by any pitcher who tossed 50 innings or more. He improved from this dismal performance, and he played 12 seasons for the Toronto Blue Jays, in which time he averaged 17 wins per season, made six all-star teams and, in 2003, won a Cy Young Award. In his second major league start, on September 27, 1998, he carried a no-hitter into the 9th inning against the Detroit Tigers before giving up a two-out home run to Bobby Higginson. Halladay was traded to the Phillies for a package of prospects following the 2009 season. 2010 season On Opening Day, Halladay pitched seven innings while giving up a run against the Washington Nationals in his first game with the Phillies. He had nine strikeouts and allowed six hits. He helped himself by driving in his second career RBI and earned his first win of the season. He followed this start with a complete game on April 11 against the Houston Astros, giving up one unearned run while striking out eight and not giving up any walks in the Phillies' 2–1 victory. Halladay pitched his first shutout in the National League, against the Atlanta Braves on April 21, becoming the first pitcher to reach four wins in the 2010 season. On May 1, Halladay pitched his second shutout of the season, limiting division rival New York Mets to three hits and striking out six. Game summary The Philadelphia Phillies–Florida Marlins game began at 7:13 p.m. on May 29, 2010, to a crowd of 25,086 at Sun Life Stadium in Miami. The home plate umpire was Mike DiMuro, the first base umpire was Tim Welke, the second base umpire was Jim Reynolds, and the third base umpire was Bill Welke. Roy Halladay pitched the 20th