The Mariners have signed left handed pitcher Oliver Perez to a minor league contract.
Perez last pitched in the bigs in 2010. He pitched for Washington’s Double A affiliate last year, and had some success. When he last pitched in the majors Pitch F/X averaged his fastball velocity at about 89 mph, and his changeup velocity about 85 mph. Both of those pitches have become largely ineffective. His slider, arguably his best pitch early in his career, also has negative statistical value according to Fangraphs.
Perez does have a career 3.37 xFIP against lefties though, compared to a 5.02 against righties, and may make an interesting bullpen arm.