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In order to make room for new acquisition Chance Ruffin, the Mariners have announced that lefty pitcher Aaron Laffey has been designated for assignment today.
Laffey, 26, was acquired by Seattle from Cleveland before the season, but he hasn't pitched well in his first full season as a reliever. Over 42.2 innings with the Mariners, he posted a 4.01 ERA, although the metrics are mixed on his performance; FIP has Laffey at 5.22 for the season, but SIERA has him at a much more solid 4.09. Either way, they're not great numbers for a reliever, though, so it's not surprising to see Laffey on the move. He gets grounders but doesn't do much else well, and his stuff is underwhelming as his fastball generally sits around 87 MPH.
From 2007-2010, Laffey made 79 appearances with the Indians, including 49 starts, and posted a 4.41 ERA. His K/BB numbers have always been poor, though, limiting him to No. 5 starter or long relief status.