PHOENIX -- The D-backs placed struggling starter Chase Anderson on the 15-day disabled list Sunday with right triceps inflammation.
Arizona also optioned reliever Enrique Burgos to Triple-A Reno and recalled outfielder Danny Dorn and reliever Matt Stites from Reno.
Anderson has been struggling with elevating his pitches and has been unable to find the form that made him so successful early in the season. Over his last five starts, the right-hander is 1-3 with a 9.12 ERA.
That stretch includes Saturday night's 8-4 loss to the Giants, when Anderson gave up seven runs on 10 hits in 3 2/3 innings, his shortest outing of the season.