Achter was assigned to the Tigers' minor-league camp Monday.

Achter inked a minor-league contract with the Tigers in December that included an invitation to major-league camp in spring training, but his standing as a non-roster pitcher put him in an uphill battle to win a bullpen gig with the big club. The 27-year-old was able to put up a 3.11 ERA in 37.2 innings with the Angels last season, but an ugly 14:12 K:BB ratio and 93.1 percent strand rate suggests he benefited from some good fortune.

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