Wolf has retired from baseball Thursday, Jon Heyman of MLB Network reports.

Wolf failed to get out of the second inning against the Twins on Sunday, giving up six runs, four of which were earned, on seven hits and a walk.

Wolf went 7.0 innings and allowed just three earned runs Monday night in the second half of a doubleheader against the White Sox. It was a stronger performance than his last few and he put his team in line for a win. Unfortunately, the offence came up short in a 3-2 loss.

Wolf lasted just three innings and gave up two runs on four hits and four walks in the second game of Sunday's doubleheader with the Indians. He didn't factor into the decision.

Wolf was not effective in a no-decision Monday, allowing four runs in 4.1 innings against the Rays this Labor Day.

Wolf was eviscerated by the Royals on Wednesday. He lasted just 3.2 innings after giving up eight hits, including two home runs, eight earned runs and three walks. He took the loss.

Wolf (0-2) had his best start since 2012 on Thursday, allowing just one run on five hits and two walks across seven innings in a 2-0 loss to the Angels. He struck out five.

Wolf worked seven solid innings against the Rangers on Saturday, but he received no support from his offence and was charged with the loss. He gave up four runs on nine hits and struck out five. Three of the runs were earned.

Wolf was traded to the Tigers on Thursday in exchange for cash considerations. He's been named the starter for Saturday's game against the Rangers.

Wolf tossed a gem for Triple-A Buffalo, pitching 7.2 innings of shutout ball with nine strikeouts, five hits and one walk in Monday's victory over Syracuse.