Orioles recall lefty Bruce Zimmermann, option righty Beau Sulser

The Orioles have optioned Beau Sulser to Triple-A, recalling Bruce Zimmermann to claim his roster spot, the team announced.

Sulser made his major league debut this season, pitching for both the Pirates and Orioles. In total, he has made six appearances between the two clubs, totaling 14 innings of work and registering a 3.86 ERA/3.82 FIP with a 12-to-6 strikeout-to-walk ratio.

Zimmermann has spent most of the season in Baltimore’s rotation. Over 13 starts, the 27-year-old southpaw has a 5.94 ERA/5.82 FIP across 66 2/3 innings. He’s tossed an additional 18 innings with a 4.50 ERA in Triple-A.

The Orioles have been surprisingly competent. Despite being in last place, they’re currently only four games under .500 overall. The rotation, however, hasn’t been a particular strength. Orioles’ starters rank 23rd overall with a 4.64 ERA.