By the Associated Press

Josh VanMeter hit a three-run homer, David Peralta and Tim Locastro both had three hits and the Arizona Diamondbacks beat the Colorado Rockies 11-5 Friday night to sweep a doubleheader. 

The Diamondbacks have won four straight games on their homestand. Zac Gallen struck out a career-high 10 over six innings to lead Arizona to a 4-0 victory in the opener.

Colorado’s loss in the first game, coupled with other results Friday night, eliminated the Rockies from playoff contention. Last-place Arizona was already out of the postseason chase.

The Diamondbacks took a 6-1 lead in the first inning of the nightcap, sending 12 batters to the plate. Antonio Santos (0-1) didn’t make it out of the first inning in his first big league start, giving up six earned runs and retiring just two batters.

The Rockies within 6-4 in the second on a three-run double by Kevin Pillar, but the D-backs responded in the third with VanMeter’s three-run shot to right field  that pushed the lead to 9-4. VanMeter came to the Diamondbacks as a part of a midseason trade with Cincinnati that sent reliever Archie Bradley back to the Reds.

Taylor Clarke (3-0) gave up four runs over five innings to get the win.

The Diamondbacks jumped ahead 2-0 in the third inning of Game 1 when Christian Walker crushed a ball down the left-field line that stayed just inside the foul pole for a two-run homer. The 29-year-old Walker has been the team’s most consistent hitter this season with a team-high 18 doubles. He also has seven homers and 34 RBIs.

Eduardo Escobar hit a triple later in the third that brought home Kole Calhoun for a 3-0 lead. The ball bounced in and out of the glove of right fielder Charlie Blackmon, who leapt for the catch near the wall.

Antonio Senzatela (5-3) gave up four runs over 4 1/3 innings. He allowed eight hits and four walks while striking out two. Raimel Tapia had three singles for the Rockies.