Nick Pivetta allowed a leadoff homer by Jung Hoo Lee and then settled down to tie his season high with 10 strikeouts in six innings and lead the San Diego Padres to a 5-1 victory against the San Francisco Giants on Tuesday night. The Padres snapped a four-game losing streak and remained two games behind the defending World Series champion Los Angeles Dodgers in the NL West. Lee homered to right-center on Pivetta's second pitch.