PHOENIX (AP) — Tim Tawa hit a three-run homer and Brandon Pfaadt carried a shutout into the seventh inning as the Arizona Diamondbacks beat the San Diego Padres 5-1 Monday night in the opener of a 10-game homestand against NL West rivals. The victory moved the Diamondbacks two games ahead of San Diego in the NL wild-card race. Tawa’s three-run homer in the fourth over the Arizona bullpen in left field put the Diamondbacks ahead to stay. He gave up five hits, walked four and struck out five. San Diego had won eight of its previous nine.