Roy Halladay - Wikipedia
Roy Halladay - Wikipedia
Roy Halladay – Society for American Baseball Research
Kevin Gausman reaches 200 strikeouts in Blue Jays' win
Roy Halladay's perfect game - Wikipedia
Roy Halladay's perfect game - Wikipedia
PHI@FLA: Halladay throws a perfect game against the Marlins
The Phillies Room: April 2021
Toronto Blue Jays
Halladay a perfect addition to Phillies history
Roy Halladay No-Hitter: 10 Greatest Pitching Performances in MLB Playoff History, News, Scores, Highlights, Stats, and Rumors
Roy Halladay Looks Back on His Phillies Years - Philadelphia Magazine
Cardboard appreciation: 1981 Topps 1980 NL Championships
Mark Buehrle - Wikipedia