Philadelphia @ Arizona preview

Last Meeting ( Aug 6, 2018 ) Philadelphia 2, Arizona 3

David Peralta's dramatic game-winning homer in the series opener elevated the Arizona Diamondbacks into first place in the National League West and they look to remain there when they host the Philadelphia Phillies on Tuesday for the middle contest of their three-game set. Peralta's second blast of Monday's game barely cleared the left-center field wall with one out in the bottom of the 14th inning as the Diamondbacks used the 3-2 victory to take a one-half game lead over the Los Angeles Dodgers.

Peralta went 4-for-7 on Monday - his second four-hit performance in five games - and is a scorching 12-for-24 with three homers and three doubles over his last five contests. His game-winning shot was the first walk-off homer of his career and gave Arizona its 10th win in 15 games. The Phillies squandered a 2-0 lead in the ninth inning of the series opener as they saw their five-game winning streak come to an end. Maikel Franco and Odubel Herrera each recorded two hits, but Philadelphia mustered just seven overall and went 0-for-9 with runners in scoring position.

TV: 9:40 p.m. ET, NBCS Philadelphia, FS Arizona

PITCHING MATCHUP: Phillies RH Nick Pivetta (6-9, 4.75 ERA) vs. Diamondbacks RH Zack Greinke (12-6, 2.96)

Pivetta has gone 0-2 over his last three starts despite striking out 28 batters in 17 1/3 innings during the stretch. The 25-year-old has struggled on the road, posting a 2-4 record and 5.63 ERA in 10 such outings. Pivetta lost his lone career start against Arizona on June 26, 2017, when he gave up six runs on seven hits and five walks in 2 2/3 innings.

Greinke won seven straight decisions before giving up two runs and four hits over six innings in a loss to San Francisco in his last turn. The 34-year-old has registered a stellar 1.68 ERA over his last nine starts and has allowed fewer than three runs in each of his last eight turns. Greinke is 8-2 with a 2.90 ERA in 12 career starts against the Phillies, but one of the setbacks occurred on April 25 as he gave up five runs and nine hits over six innings.

WALK-OFFS

1. The Diamondbacks have won 15 of their last 21 meetings with the Phillies.

2. Philadelphia LF Rhys Hoskins was hitless in four at-bats in the opener and is 0-for-10 over his last three games.

3. Arizona CF A.J. Pollock (tired legs) was limited to pinch-hitting duties in the opener but is expected back in the starting lineup on Tuesday.

PREDICTION: Diamondbacks 5, Phillies 2