The Diamondbacks have designated Brian Sweeney and Daniel Stange for assignment according to a team press release. The moves clear up 40-man roster spots for Aaron Heilman and Willie Bloomquist, whose deals were made official.
Sweeney, 36, pitched 37 innings for the Mariners last year, posting a 3.14 ERA with 3.4 K/9 and 1.5 BB/9. Arizona claimed him off waivers earlier this offseason. Stange, 25, made his big league debut this year, throwing four innings with the D'Backs. The right-hander had a 3.58 ERA with 5.5 K/9 and 3.4 BB/9 in 55 1/3 minor league innings in 2010.