Arizona @ Colorado preview

Last Meeting ( Jul 10, 2018 ) Arizona 5, Colorado 3

The Colorado Rockies have climbed back into the tight National League West race despite struggling at home, where they own a surprising 18-23 record. The Rockies look to improve on that mark Wednesday as they continue their three-game series against the visiting Arizona Diamondbacks, who have won their last nine contests at Coors Field.

The Diamondbacks improved to 25-15 since May 28 with Tuesday’s 5-3 win as David Peralta belted a three-run homer and Brad Boxberger pitched a scoreless ninth inning for his 22nd save. Peralta is 15-for-40 with eight RBIs over his last 10 games overall and 27-for-71 with three homers and 14 RBIs in his last 17 meetings with the Rockies. Nolan Arenado belted his 23rd homer in Tuesday’s loss for Colorado, which has dropped back-to-back contests following a five-game winning streak. The team’s bullpen faltered again as Jake McGee and Scott Oberg surrendered four runs in the seventh inning, allowing Arizona to rally from a 2-1 deficit.

TV: 8:40 p.m. ET, FS Arizona, AT&T SportsNet-Rocky Mountain (Colorado)

PITCHING MATCHUP: Diamondbacks RH Shelby Miller (0-3, 9.00 ERA) vs. Rockies RH German Marquez (7-8, 4.92)

Miller has lost each of his first three starts since returning from Tommy John surgery on June 25, but he had an encouraging outing on Thursday in San Diego. The 27-year-old recorded seven strikeouts and allowed five runs - three earned - over 5 1/3 innings in the 6-3 loss. Miller is 2-4 with a 5.94 ERA in nine career starts versus Colorado and has struggled to contain DJ LeMahieu (8-for-19, home run).

Marquez won his second straight start on Friday, allowing one run and five hits over six innings against Seattle. The 23-year-old is 5-3 with a 2.62 ERA on the road this season but owns a 2-5 record and 7.93 ERA at Coors Field. Paul Goldschmidt is 8-for-15 with three home runs against Marquez, who is 0-4 with a 4.47 ERA in nine career appearances (eight starts) versus Arizona, including an 0-1 record and 5.00 ERA in two outings this season.

WALK-OFFS

1. Rockies SS Trevor Story has recorded nine multi-hit performances in his last 13 games.

2. Arizona is 6-1 against Colorado this season, including a three-game sweep at Coors Field last month.

3. The Rockies activated C Tom Murphy from the paternity list and optioned 1B/OF Jordan Patterson to Triple-A Albuquerque.

PREDICTION: Rockies 7, Diamondbacks 6