Giants ace left-hander Madison Bumgarner was sharp in his first rehabilitation start since breaking the pinkie on his pitching hand in March, striking out eight while throwing 47 pitches over 3 2/3 hitless innings for Triple-A Sacramento.

It was such an encouraging start that Bumgarner didn't rule out an immediate return to the Giants.

"I obviously didn't know before today, but judging off the way I felt out there, I think so, for sure," Bumgarner said. "I wouldn't say I'd be back and be in midseason form, but I feel definitely good enough to get some outs."