Phillies retire late pitcher Roy Halladay's No. 34, the 7th player to earn honor
Plane Crash Kills Roy Halladay, Who Pitched a Perfect Game - WSJ
Remembering Roy Halladay's perfect game and playoff-no hitter
October 6, 2010: Phillies' Roy Halladay throws postseason no-hitter – Society for American Baseball Research
Don Larsen, Who Threw the Only Perfect World Series Game, Dies at 90 - WSJ
13 years ago, Phillies' Roy Halladay pitched 2nd no-hitter in MLB postseason history [video], MLB
Halladay throws no-hitter as Phils win playoff opener
6 Years Ago Today, Roy Halladay Threw a Playoff No-Hitter
PHI@FLA: Halladay throws a perfect game against the Marlins
Roy Halladay's perfect game - Wikipedia
Roy Halladay's playoff no-hitter remembered