Laffey has been underwhelming as a pitch-to-contact lefty with the Indians, posting a 4.41 ERA that perfectly mirrors his 4.41 FIP. He doesn't miss bats (4.35 K/9) and lacks ideal command (3.60 BB/9) but he does know how to get batters to hit the ball on the ground (51.6% GB) and as a result, typically keeps the damage to a minimum. All told however, he simply doesn't have the making of a very good Major league pitcher.
The Mariners acquisition of him will provide them with additional depth and pitching in a stadium like the spacious Safeco Field should help make Laffey look a little bit better than he really is. Lawson had some success last year in AA as a 25 year old, but he was playing in a league where the average age is about two years younger and at 26 in 2011 with no AAA experience, his future is probably more as Minor League filler.