Before this season, the San Diego Padres had never recorded a sweep in Arizona. Now they are on the verge of their second one in 2012.
The Padres seek a seventh straight win overall and sixth in a row against the Diamondbacks on Sunday.
San Diego has rebounded from a five-game losing streak with six consecutive wins, including a 9-3 victory Saturday. Yonder Alonso hit one of his team's three home runs and added a two-run single to back eight innings from Clayton Richard.
Chase Headley hit his major league-high 10th home this month and Carlos Quentin went deep for the 14th time this season.
The win was the Padres' fifth straight over the Diamondbacks, with all five coming at Chase Field following a three-game sweep in early July.
Prior to that series, San Diego (58-70), which has outscored the Diamondbacks 37-16 during the current streak, had never swept a series in Arizona.
"We just feel that we play well here," Alonso, who is 8 for his last 16 at Chase Field, told the Padres'...