"I would say right now the chances are this will probably be it," Haren told Muskat. "I don’t want to say this is it and pull a Brett Favre. That’s why I said ‘probably’ [on Twitter]. At least I leave myself a little way out." The 34-year-old contemplated retirement before the 2015 season as well if he wasn't traded to a team on the west coast, but the competitor in him wound winning out and he is enjoying a terrific year in his 13th big league season.