Sources -- Colts won't recoup money from Luck ESPNOpinion: Andrew Luck's legacy will be defined in a different way. And that's a good thing USA TODAYAndrew Luck's retirement from the NFL shocks Ryan Clark | SportsCenter ESPNDoyel: Colts QB Andrew Luck shocks world by retiring, and for his sake I hope he's right Indianapolis StarGlauber: Andrew Luck walks off on own terms NewsdayView full coverage on Google News