Andy Pettitte once revealed that Roger Clemens had introduced him
Case study: Roger Clemens' Hall credentials - The San Diego Union-Tribune
New York Yankees pitcher Andy Pettitte will retire after season – The Mercury News
Pettitte's Intense Focus Helps Set Him Apart - The New York Times
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Roger Clemens and the late-winter trade - River Avenue Blues
Yankees' Pettitte speaks of Roger Clemens in court
Looking back on Andy Pettitte's return, five years later - Pinstripe Alley
Andy Pettitte, Roger Clemens still pitching, but from different angles - The Boston Globe
Embattled Bonds ready for record chase; will Rocket return?
With late-career stats that were perhaps too good, Roger Clemens is dealt a Hall of Fame shutout - The Boston Globe
Uncomfortable Scrutiny for Two Friends' Pitching Partnership - The New York Times
Rookie steps up against Clemens – The Denver Post
Andy Pettitte Timeline: Yankees pitcher forever linked to Roger Clemens and baseball's PED era – New York Daily News
The Rocket That Fell to Earth: Roger Clemens and the Rage for Baseball Immortality: 9780061724756: Pearlman, Jeff: Books
Uncomfortable Scrutiny for Two Friends' Pitching Partnership - The New York Times