SAN DIEGO -- The Arizona Diamondbacks snapped the San Diego Padres' three-game winning streak, defeating the Padres 8-4 on Monday night.

Arizona starter Rubby De La Rosa (2-0) worked six innings and was touched for three runs and six hits. De La Rosa benefited from the Diamondbacks scoring four unearned runs.

Center fielder Ender Inciarte had three RBIs on two doubles and a triple for Arizona. He also added an assist when he threw out right fielder Matt Kemp at third base in the eighth inning.

That short-circuited the Padres' last best shot, as they scored but one run in that inning on center fielder Wil Myers' double and singles by Kemp and left fielder Justin Upton.

Padres starter Andrew Cashner (0-2) kept an impressive streak alive but it came in a losing cause.

Cashner has allowed two or fewer runs in 19 consecutive Petco Park starts, dating to June 11, 2013. That is a franchise record.

But Cashner's defense let him down in the four-run, fourth inning. He did allow seven hits and a walk, while striking out nine in six innings.

Arizona went ahead 8-3 in the eighth when catcher Tuffy Gosewisch's one-out, RBI single scored third baseman Jake Lamb, following his inning-opening double. Inciarte then added a two-run triple.

The Diamondbacks extended their cushion to 5-3 in the seventh inning when first baseman Paul Goldschmidt drove in Inciarte on a ground out off reliever Brandon Maurer. Inciarte opened the inning with a double and advanced to third on shortstop Chris Owings' sacrifice bunt.

Second baseman Yangervis Solarte drove in third baseman Will Middlebrooks with a fifth-inning single, Solarte's second RBI of the game, to pull the Padres to within 4-3.

The Diamondbacks got two runners in scoring position in the fifth on consecutive singles from left fielder David Peralta and right fielder Mark Trumbo. Lamb was caught looking as Cashner struck out the side.

Solarte's third-inning, two-out double scored Myers to slice the Padres' deficit to 4-2. The damage might had been greater, but Cashner, who had singled, slipped when returning to second after Myers' infield hit. Cashner was tagged out by second baseman Aaron Hill following a relay from first baseman Goldschmidt.

After Solarte's double, Kemp went down looking, leaving two runners on.

First baseman Yonder Alonso smacked his first home run of the season, a second-inning, two-out, 416-foot blast over the center-field fence which cut Arizona's lead to 4-1.

The Diamondbacks got to Cashner early, roughing him up for four runs in the second inning while batting around.

It wasn't all Cashner's doing, however. Arizona had some help, with Solarte drawing a key error.

Trumbo and Lamb singled, then Solarte's wild throw to first base let Gosewisch reach base and allow Trumbo score. Inciarte followed with a two-out, two-run double. Owings added a run-scoring single for a 4-0 lead.

NOTES: Padres manager Bud Black broke one of his rules by not putting C Wil Nieves into Monday's lineup. Black once declared if a player hit a homer in a game, he started the next one. But Nieves, despite his Sunday grand slam off the Giants' Jake Peavy, resumed his backup role. ... 2B Yangervis Solarte started for the second straight game over Jedd Gyorko. ... RHP Ian Kennedy, on the DL with a strained left hamstring, is making progress. Black said Kennedy could soon throw a bullpen session. . ... Arizona manager Chip Hale said he will carry two catchers through at least the Padres series and San Diego's right-handed-heavy staff. C Oscar Hernandez (hand) remains on the DL. ... No surprise struggling LF David Peralta was in the lineup. His lifetime Petco Park average entering the game was .375 (9 of 24).