Orioles pitcher Ubaldo Jimenez was ejected from Friday's start in the fourth inning after hitting Red Sox third baseman Pablo Sandoval with a pitch.
Jimenez did not allow a run in 3 2/3 innings, striking out two and walking three.
Kevin Gausman was called upon from the bullpen to relieve Jimenez.
"It was my first one. I was shocked," Jimenez said. '"He's a good hitter and I'm trying to go inside."
Jimenez's next scheduled start is Wednesday in Toronto.