Philadelphia @ Arizona preview

Last Meeting ( May 10, 2013 ) Philadelphia 2, Arizona 3

Even though Roy Halladay is likely to miss the rest of the season following shoulder surgery, the Philadelphia Phillies still hold a pair of aces. Cliff Lee and Cole Hamels are capable of carrying the Phillies and Lee will take his turn when Philadelphia visits the Arizona Diamondbacks on Saturday. Hamels lost 2-1 in Thursday's series opener while rookie Tyler Cloyd - Halladay's replacement in the rotation - turned in an exceptional performance in Arizona's 3-2 victory on Friday.

The Diamondbacks have won five straight and received some much-needed offense Friday from a pair of struggling regulars. Martin Prado snapped an 0-for-29 skid with runners in scoring position with a game-tying RBI single in the seventh inning and Miguel Montero (.202 batting average) delivered the game-winning home run in the eighth. Philadelphia's offense is struggling top to bottom and is fifth-worst in baseball with an average of 3.5 runs per game.

TV: 8:10 p.m. ET, Comcast SportsNet Philadelphia, Fox Sports Arizona

PITCHING MATCHUP: Phillies LH Cliff Lee (3-2, 3.26 ERA) vs. Diamondbacks RH Trevor Cahill (2-3, 2.80)

Lee was winless in four starts (0-2) before allowing two runs and five hits in eight innings when Philadelphia snapped San Francisco's six-game winning streak with a 6-2 victory Monday. Lee has his typical command - 40 strikeouts and seven walks, but has yielded 46 hits in 49 2/3 innings, including 36 in his last 33 frames. The 34-year-old is 3-1 with a 3.50 ERA in five starts against Arizona. Paul Goldschmidt has homered twice against Lee in two at-bats.

Cahill won his last two decisions and has yielded four runs in 20 innings over three starts during that span. The 25-year-old, who has a 1.16 WHIP and .225 batting average against, allowed two runs and six hits in seven innings in a 9-2 victory at Dodger Stadium on Monday. Three starts ago, he shut down Colorado for five innings to earn the win at hitter-friendly Coors Field. Cahill was 0-1 in two starts against Philadelphia in 2012, allowing seven runs and 12 hits in 12 1/3 innings.

WALK-OFFS

1. Jimmy Rollins' 44th career leadoff homer came on the first pitch of Friday's game - Philadelphia's 14th consecutive solo home run.

2. Arizona is 10-6 in one-run games, including 3-0 in the last three days.

3. With Arizona's Heath Bell unavailable after closing the previous three games, RHP David Hernandez got the call Friday. He retired pinch hitter Jayson Nix and Rollins with runners on second and third and one out in the ninth to earn his first save in four chances.

PREDICTION: Diamondbacks 3, Phillies 2