Roy Oswalt decides to retire - ESPN
Roy Oswalt has thrown final MLB pitch
Roy Oswalt believes in himself, and the Rockies agree – The Denver
Former Houston Astro Roy Oswalt to Sign with the Texas Rangers
Philadelphia Phillies - Wikipedia
Roy Oswalt - Wikipedia
Former Phillies pitcher Roy Oswalt retiring after 13 seasons
Cliff Corcoran: Phillies' Oswalt facing familiar foe in Game 6
Houston Astros: Re-Evaluating the Roy Oswalt Trade
Rockies Sign Roy Oswalt - MLB Trade Rumors