San Diego Padres manager Bob Melvin says he'll have prostate surgery Wednesday and hopes he misses only part of a forthcoming road trip.

Melvin said he doesn't think he has cancer, "but they won't know until they get in there." He was in street clothes during his pregame session with the media before Tuesday night's game against the Chicago Cubs.

Melvin, who was hired away from Oakland on Nov. 1, said he's been feeling various symptoms since the team returned from a road trip last Wednesday night.