Michael Conforto and Patrick Bailey hit two-run doubles in a five-run 10th inning, and the San Francisco Giants beat the Pittsburgh Pirates 8-4 on Sunday to finish a three-game sweep and extend their winning streak to five. With automatic runner Casey Schmitt on second, Wilmer Flores singled off Yerry De Los Santos (0-1) starting the 10th and Joc Pederson hit a go-ahead sacrifice fly. J.D. Davis walked, Conforto doubled to the right-center gap for a 6-3 lead and Mike Yastrzemski was intentionally walked.