The veteran is expected to sign a one-day deal with the Toronto Blue Jays, the club who drafted him way back in 1995, then hold a press conference at 12:30p.m. ET Monday afternoon to make his retirement official.
The 36-year-old Halladay was presumed by some just a few years ago to be the next starter to reach the 300-win plateau. However, after a stellar first two seasons with the Philadelphia Phillies -- in which he finished first then second in the NL Cy Young voting -- the right-hander finally succumbed to the arm injuries he'd been able to avoid for so long.
Much of Halladay's final two big-league campaigns was spent fighting off and recovering from shoulder injuries, limiting him to just 218⅓ innings in that span. The Doc won't be remembered for his struggles at the end, however, he'll be remembered for his decade-long stretch of dominance that earned him eight all-star appearances and two Cy Young awards.
Between 2002-2011, Halladay posted a 2.97 ERA in nearly 2,200 innings pitched (303 starts), averaging an incredible 219 innings per season over that span. In addition to his two Cy Young trophies, Halladay also finished in the top five on five different occasions and even got top 10 MVP consideration on two occasions.
Accounting for all that, perhaps Halladay's biggest claims to fame are his perfect game against the Marlins on May 29, 2010, and his postseason no-hitter against the Reds in Game 1 of the 2010 NLDS -- just the second playoff no-no in MLB history.
Halladay retires with a 203-106 win-loss record, a 3.38 ERA and 2,117 strikeouts in parts of 16 big-league seasons.