Bush (0-1) took the loss against Oakland on Monday, allowing three runs on two hits and five walks while striking out three batters over four innings.
Bush was called up from Triple-A Charlotte on Monday for his first major-league appearance and was handed the task of trying to end Chicago's 20-game losing streak. The southpaw couldn't get the job done, mostly due to his control -- he gave up just two hits but walked five batters and threw only 45 of 85 pitches for strikes. Bush struggled with walks in the minors too, issuing 42 free passes over 99.2 frames between Double-A and Triple-A. Despite Monday's rough start, he could get at least another turn in the rotation with Drew Thorpe (forearm) landing on the injured list Friday.