The right-hander allowed nine runs on five hits in two innings of work with Triple-A Pawtucket, striking out one and walking three in a rehab outing against Lehigh Valley. He now boasts a 17.05 ERA, and has thrown 47 pitches, 22 for strikes.
Bonser is currently on the DL because of a right groin strain.
The IronPigs sent 11 men to the plate in the second and scored eight times in the frame.
Lehigh Valley's Chris Duffy led off the game with a single, and after a wild pitch by Bonser, he moved to second. He eventually scored on a groundout by Neil Sellers.
In the second, Dewayne Wise reached when he was hit by a pitch with one out, then he stole second. After John Mayberry and Dane Sardinha both walked to load the bases, Wise scored on another wild pitch before Bonser reloaded the bases with a walk to Brian Bocock. Duffy's second hit of the game brought home Mayberry, then Wilson Valdez struck with a three-run single. Valdez advanced to third on Josh Reddick's throwing error.
The damage was far from over, as Valdez would score on a Sellers single. After Andy Tracy's grounder made the second out, Cody Ransom hit a two-run homer before Wise popped out to end the inning.
Lehigh Valley went on to post a 12-0 shutout of the PawSox.