Oswalt, Berkman officially retire as Astros
Lance Berkman - Cooperstown Expert
Lance Berkman News, Photos, Quotes, Video
Six-time All Star Berkman retires after 15 years
Lance Berkman – Society for American Baseball Research
Mark Teixeira To Retire After 2016 Season - MLB Trade Rumors
BSB: HBU Names Lance Berkman as New Head Coach - Houston Christian University Athletics
Lance Berkman leaning towards retirement
Former Texas Rangers outfielder Lance Berkman retires