The Tigers announced a minor roster move before Friday's game, swapping bullpen arms, sending rookie Chance Ruffin back to Toledo, and bringing back lefty Daniel Schlereth.

Schlereth saw action in eight games after he was sent down on June 30, going 1-0 with a 0.77 ERA, and a strikeout-to-walk ratio of 18-5. Before his demotion, he'd allowed 19 walks in 25.2 innings with the parent club, fielding an ERA of 4.91.

Ruffin's two-appearance stint with the club may have just been an audition, given that he'd only thrown nine innings at Triple-A Toledo after his promotion from Double-A Erie on July 1. The former supplemental first-round pick from the 2010 draft is in just his second professional season.

If the Tigers are dangling him as trade bait, they can point to his quick acclimation to each level of professional ball he's encountered, including the big leagues. His debut was in the bases-loaded debacle on Monday, but Thursday, he threw two scoreless innings, one of the few effective performances by a Tigers pitcher in a debacle of a 12-7 loss to the Angels. Clearly, he's a quick learner.