Colorado @ Arizona preview

Last Meeting ( Jul 5, 2013 ) Colorado 0, Arizona 5

The Arizona Diamondbacks will try for their fourth straight victory when they host the Colorado Rockies on Saturday. Arizona, the only team in the National League West with a winning record (45-41), began a stretch in which it will play 17 of its next 22 games at home with a 5-0 victory over Colorado on Friday. Arizona has a chance to strengthen its grip on the West with a 10-game homestand heading into the All-Star break, including three with the red-hot Los Angeles Dodgers starting Monday.

The Rockies hope to have Carlos Gonzalez back in the lineup after he missed Friday's game with a back injury. Gonzalez, who has 23 homers and 62 RBIs, took batting practice Friday, but manager Walt Weiss decided to give him the night off. Colorado, which is 3 1/2 games behind Arizona and tied for second with Los Angeles, began a 10-game road trip which will take it to the break by absorbing its seventh shutout this season, and second in four days.

TV: 10:10 p.m. ET, MLB Network, ROOT Sports (Colorado), Fox Sports Arizona

PITCHING MATCHUP: Rockies LH Drew Pomeranz (0-1, 8.31 ERA) vs. Diamondbacks LH Wade Miley (4-7, 4.29)

After going 8-1 at Triple-A Colorado Springs this season, Pomeranz was rudely welcomed back to the major leagues by San Francisco on Sunday. The 24-year-old Collierville, Tenn., native yielded four runs and seven hits - including two home runs - in 4 1/3 innings of a 5-2 loss. Pomeranz, who was acquired in 2011 from Cleveland in the Ubaldo Jimenez trade, is 0-1 with a 8.03 ERA in three career starts against Arizona, while Gerardo Parra is 3-for-6 with a home run against him.

Miley didn't allow a run, but yielded six hits and four walks in 5 2/3 innings in Arizona's 5-4 loss to the Mets on Monday. The 26-year-old Hammond, La., native hasn't won since June 5 while going 0-2 in his last five starts. Miley faced Colorado on April 27 when he yielded four hits and seven walks in 4 1/3 shutout innings and is 4-0 in seven games (six starts) with a 2.79 ERA against the Rockies, but has struggled against Wilin Rosario (5-for-11, home run, double).

WALK-OFFS

1. An Arizona starter won for only the second time in the last 26 games (2-11) when rookie Tyler Skaggs limited Colorado to three hits in eight innings Friday.

2. Colorado is in a stretch where it is facing four consecutive left-handers, with Patrick Corbin to complete the run Sunday.

3. The Diamondbacks are 10-3 in extra-inning games, the most wins and second-best winning percentage in the majors. Kansas City (6-1, .857) has the highest winning percentage while Cincinnati has the second-most wins with seven (7-7).

PREDICTION: Diamondbacks 6, Rockies 5