Bergesen, who had the highest ERA of the Orioles’ five starters this year, was the obvious choice to go to make room for Matusz. He was 1-6 with a 5.36 ERA in nine starts and one relief appearance. He actually pitched his first career shutout against the Rays just two weeks ago, but the Orioles had lost his eight other starts this season.
Tillman’s departure is a surprise. He had a 1.33 ERA in his last four starts, though it’s worth noting that he pitched a total of 20 1/3 innings in those games. For the season, he was 2-3 with a 4.69 ERA in 10 starts.
The Orioles don’t have anyone in Triple-A worthy of an opportunity — Norfolk’s only starter with a sub-5.00 ERA is veteran lefty Chris George and he’s at 4.66 — so odds are that Tillman will return as soon as the team goes back to five starters.