According to Nick Piecoro of the Arizona Republic, right-hander Yusmeiro Petit and left-hander Doug Slaten have been claimed off waivers.
Petit, 24, was scooped up by the Mariners. He went 3-10 with a 5.82 ERA, 1.52 WHIP and 74/34 K/BB ratio in 17 starts (89 2/3 innings) this season with the D'Backs. As Piecoro notes, Petit has allowed 1.96 HR/9 through 229 1/3 major league innings, tied for the worst rate in MLB history.
Slaten, who turns 30 in February, was claimed by the Nationals. He allowed five earned runs and 11 total baserunners in 6 1/3 innings with the Diamondbacks in '09, but posted a 3.09 ERA and a 40/15 K/BB ratio in 43 2/3 innings at Triple-A Reno. He hasn't been the same since undergoing knee surgery at the end of 2007.
