Roy Halladay - Wikipedia
Championship Year in Review: From April to October, in their own words - Giants Extra
One baseball connects two 2019 Hall of Fame inductees
Baseball Hall of Fame: How Roy Halladay perfected his cutter, thanks to Mariano Rivera
Mariano Rivera's Cutter and the Nastiest Pitches in Baseball, News, Scores, Highlights, Stats, and Rumors
just four teams
Yankees 'Overnight Babe Ruth' Shocks New York With Favorite Meal
What Mariano Rivera Shared With Roy Halladay, Besides Hall of Fame Credentials - The New York Times
How Mariano Rivera Once Helped Roy Halladay, Ticked Off Yankees Teammates
Championship Year in Review: From April to October, in their own words - Giants Extra