The Diamondbacks have released right-hander Josh Collmenter, reports FanRag Sports’ Jack Magruder (Twitter link). Collmenter had been in limbo since the Diamondbacks designated him for assignment July 30, but he’s now free to search for another opportunity elsewhere.

Collmenter picked up 200 appearances and 75 starts with Arizona, which selected him in the 15th round of the 2007 draft, and compiled a terrific ERA (3.54) to go with 6.28 K/9 against 2.14 BB/9 in 659 1/3 innings. He has also logged two seasons, 2011 and 2014, with at least 154 1/3 innings and a sub-3.50 ERA. Collmenter began 2015 as the Diamondbacks’ Opening Day starter before eventually shifting to a bullpen role, and he posted a solid 3.79 ERA across 121 frames and somewhat offset a below-average K/9 (4.69) with a 1.79 BB/9. The 30-year-old hasn’t been nearly as successful at preventing runs (4.84 ERA) or limiting walks (4.43 BB/9) in 22 1/3 innings this season, though he has generated ground balls at a 47.7 percent rate – a marked increase over his career 36 percent average.

Collmenter, who was on a $1.85MM club option with Arizona this year, could catch on with a different team for a prorated portion of the league minimum.