Padres right-hander Matt Waldron suffered a mild oblique strain on Friday and is going to "need some rest for some period of time," manager Mike Shildt says.

San Diego Padres righty Matt Waldron suffered a mild oblique strain while warming up before entering a spring training game. He may miss the start of the season.

Right-hander Matt Waldron sustained a mild oblique strain Friday, Padres manager Mike Shildt told MLB.com’s AJ Cassavell and other reporters. Waldron suffered the injury while warming up in the bullpen for a scheduled relief appearance in the Padres’ Cactus League game.

An injury puts a Padres rotation candidate "in jeopardy" of missing the Opening Day roster. Visit MLB Trade Rumors for more.