Davis throws successful bullpen session on Sunday

SURPRISE, Ariz. -- Right-hander Wade Davis threw in the bullpen on Sunday and his right shoulder passed the test.

"It went pretty good," Davis said. "I've been playing catch the whole time, I just threw my side today and I'll throw another on Tuesday."

Soreness in Davis' right shoulder prompted the Royals to skip his turn in the rotation on Saturday. He expects to make his scheduled start on Friday against the Padres.

Davis said his shoulder muscle just tightened up in a very small area.

"Nothing extreme. Actually, it felt great through the whole process. It was just a really small little deal that we wanted to take it easy on, so we just took a couple days [off]," he said.

Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.