(AP) -- Chris Tillman had one of the best performances of his career in his last start.
He's also had some of his worst against the Kansas City Royals.
Tillman will try to pitch the Orioles to a season-best fourth straight win Wednesday night against the visiting Royals.
After going 0-1 with a 7.07 ERA in his first three starts this season, Tillman (2-1, 3.63 ERA) is 2-0 with a 1.31 mark in his past three outings.
He was dominant in a 5-1 victory over his hometown Los Angeles Angels on Thursday. The right-hander allowed three hits in eight scoreless innings, struck out three, walked two and retired 20 of his last 21 batters.
"I think he had something like 23 out of 29 first-pitch strikes, and that was the difference," manager Buck Showalter said. "You could tell early on he had a crisp fastball."
Success against the Royals (17-12), however, has been elusive. In three starts versus Kansas City, Tillman is 0-2 with a 10.93 ERA, giving up six homers and 23 hits in 14 innings.