SAN DIEGO (AP) -- Matt Kemp doesn't think batting leadoff matters, even though his numbers are markedly better in the No. 1 spot in the lineup.
Kemp hit a leadoff homer and Derek Norris homered twice, but it was not enough as the Arizona Diamondbacks snapped a three-game losing streak with a 6-4 win over the Padres on Sunday.
The Diamondbacks got home runs from Welington Castillo, David Peralta and Jake Lamb to avoid being swept in the three-game series.
Since being elevated by interim manager Pat Murphy to the leadoff spot five games ago, Kemp is batting .350 (7 for 20) with two doubles, two homers and five RBIs. In his previous 13 games, he was batting .192 with two home runs and four RBIs.
"Leading off is just one at-bat during the whole game," Kemp said. "It's not really that big of a deal."
However, he admitted his timing has begun to improve recently.
"I keep feeling better, keep grinding, keep working," Kemp said. "The swing is going to come. I can still hit."
Kemp hit a leadoff drive for the Padres in the first, his sixth homer of the season. Norris connected for a two-run shot in the fourth. He went deep again in the sixth for his 11th homer.
"I put a couple of good swings on a couple of good pitches." Norris said. "Sometimes your power surges come at different times."
Castillo's three-run shot gave the Diamondbacks a 3-1 lead in the second. Peralta had a solo drive in the third, and Lamb's two-run homer made it 6-3 in the sixth.
Chase Anderson (4-2) pitched seven innings and gave up four runs and five hits. Brad Ziegler worked the ninth for his 12th save in 14 chances.
The Padres were trying for their first three-game win streak in more than three weeks.
San Diego right-hander Odrisamer Despaigne (3-6) allowed five runs - four earned - and three hits over 5 2/3 innings. He is 1-6 with a 5.68 ERA in his last 10 starts.
Trailing 4-3 in the sixth, Despaigne got the first two outs before he hit Cuban countryman Yasmany Tomas. Lefty Frank Garces then came on to face the lefty-hitting Lamb, who drove a 1-2 pitch into the right-field stands for his second of the season.
"(Garces) had been pitching decent, but he didn't execute his pitch," Murphy said.
The win moved Arizona back ahead of San Diego into third place in the NL West.
Padres 3B Will Middlebrooks left the game in the seventh inning after he rolled his ankle while trying to catch a foul popup near the Diamondbacks dugout. Middlebrooks missed making the catch when he tripped over a weighted bat in the on-deck circle.
A LONG TIME COMING
Lamb's home run in the sixth inning was just his second of the season and first since April 7 in the second game of the season.
Diamondbacks: OF A.J. Pollock was held out of the starting lineup for just the second time in 30 games because manager Chip Hale is concerned about fatigue.
Padres: A decision on whether to place 2B Cory Spangenberg (left knee bone bruise) on the 15-day disabled list will take place before Tuesday's game against Seattle. Spangenberg was hurt when Arizona's Nick Ahmed took him out with a slide in Saturday night's game as Spangenberg was completing a double play in the first inning. ... C Tim Federowicz (right knee surgery) caught a simulated five innings in the bullpen before the game. Federowicz, out since spring training, caught 17 pitches in each of the five simulated innings with rest in between.
Diamondbacks: RHP Allen Webster (1-1, 6.46 ERA) will open up a three-game series at home against the Los Angeles Dodgers on Monday night. Webster is coming off one of the worst starts of his career, having allowed a career-high eight runs in a 10-5 loss at Colorado.
Padres: After an off day on Monday, RHP Ian Kennedy takes the mound Tuesday night to start a two-game set against Seattle, San Diego's last home games before the All-Star break.