Who are the 24 MLB pitchers who have thrown a perfect game?
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Roy Halladay Perfect Game Celebration Philadelphia Phillies 8X10 Photo LIMITED STOCK
Phillies to Hire Juan Castro as Major League Infield Coach
Roy Halladay's perfect game - Wikipedia
Phillies to honor Roy Halladay 10 years after perfect game - 6abc Philadelphia
Roy Halladay Looks Back on His Phillies Years - Philadelphia Magazine
Remembering Roy Halladay's perfect game and playoff-no hitter
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Roy Halladay Perfect Game Engraved Collector Plaque w/8x10 Photo
Phillies' Halladay Opens Playoffs With No-Hitter - The New York Times
Roy Halladay Pitches Baseball's 20th Perfect Game - The New York Times