Padres pitcher Mark Prior will have season-ending surgery on his injured right shoulder, according to The Associated Press. "I can't imagine how frustrated he is," San Diego manager Bud Black said. "It looked like everything was on course. Then to have this happen I'm sure is extremely frustrating. I'm upset for him just because there was such confidence from him about how he felt." Prior has not pitched in the Major Leagues since August of 2006. The Padres are unsure when Prior will be able to resume throwing after the surgery.