Matt Cain walked in from the bullpen and heard the roar of the San Francisco Giants fans at Scottsdale Stadium. "I thought everybody really loved me," Cain said, "and then I looked behind me and saw Buster." The return of Buster Posey was the story of the day for the Giants in Friday's 6-3 Cactus League victory over a Reds split-squad, with Freddy Sanchez's return a...