Matt Cain raised his arms and waved his cap, fighting off tears amid a standing ovation as he walked off the mound for the last time Saturday. Cain's decorated 13-year career came to an end with him pitching five shutout innings in the San Francisco Giants 3-2 loss to the San Diego Padres. The home crowd at AT&T Park saluted the right-hander, a cornerstone of the Giants' championship era who pitched the only perfect game in franchise history.