"I don't know if I'm strong yet, but the ball's coming out really well," Affeldt said.
Infielder Tony Abreu, who had been on a Minor League injury rehabilitation assignment with Triple-A Fresno, returned to AT&T Park to have a groin injury examined, Bochy said. Abreu, who hasn't played since Saturday, is batting .455 (5-for-11) on his rehab stint.
Bochy had no update on center fielder Angel Pagan, who's recovering from left hamstring surgery and remains expected to advance from the Rookie-level Arizona League to Fresno later this week.
Chris Haft is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.