Nationals, Mariners claim Diamondbacks pitchers

It didn't take long for Diamondbacks pitchers Doug Slaten and Yusmeiro Petit to be claimed off waivers. 

The Nationals were rewarded the claim on Doug Slaten, who hasn't been able to return to 2007 form when he went 3-2 with a 2.72 ERA in 61 appearances. The 29-year old lefty certainly will be a fixture in the Nationals' depleted bullpen next season. 

Petit was picked up by the Mariners after going 3-10 with a 5.82 ERA last season. Petit struggled mightily as a starter, but I think he could find some success in a middle relief role.