The Diamondbacks and Rockies continue their four-game series Saturday night at Coors Field.
With nine wins in its last 14 games, Arizona (75-75) is 4 1/2 games behind St. Louis for the second wild card. Milwaukee, the Los Angeles Dodgers and Philadelphia are also in front of the Diamondbacks.
Trying to keep pace, Arizona won 15-5 Friday to improve to 7-5 in the season series against Colorado, which it will face six more times. The Diamondbacks, who have averaged 6.1 runs in the 12 games, have won five of the last six meetings.
Eaton's home run was his second in as many days. He's hitting .273 with 13 runs scored and 11 walks in 14 games since being called up earlier this month.
He'll try to help Arizona continue to take advantage of its matchups against Colorado (58-92), which has lost seven straight and 14 of 16. The Rockies have allowed at least 12 hits in four straight games and have a 7.87 ERA over their last 10.
Trying to stabilize things, Colorado will hand the ball to Jhoulys Chacin (2-5, 4.58 ERA), who has a 2.37 ERA in six starts since returning from the disabled list last month.
Chacin allowed one run over five innings of a 2-1 loss to San Francisco on Monday.
"I just want to keep feeling good, be healthy and finish the season strong," said Chacin, who spent three-plus months on the disabled list with right shoulder inflammation.
The right-hander is 3-2 with a 2.76 ERA in eight appearances - seven starts - versus Arizona, striking out 44 in 42 1-3 innings.
Patrick Corbin (6-7, 4.02) will counter for the Diamondbacks as he looks to build on one of his best outings of the season.
Corbin gave up two runs over a season-high eight innings of a 10-2 win against the Giants on Sunday.
The rookie left-hander had never pitched longer than seven innings, had an RBI or had an extra-base hit, but accomplished all three - driving in four - in the victory.
"As you guys remember, he's had games where he has had low pitch counts and then as soon as he hit the seventh inning he was done," Gibson told the Diamondbacks' official website. "It's good to see him get additional innings and make a step forward."
Corbin had a much rougher outing in Denver on May 14. He surrendered six runs and nine hits over six innings of a 6-1 loss.
|September 11, 2012||J.J. Putz||Day-to-Day||Stiff back|
|August 30, 2012||Chris Johnson||Day-to-Day||Flu|
|August 21, 2012||Justin Upton||Day-to-Day||Left game - Tight hamstring|
|August 17, 2012||Jason Kubel||Day-to-Day||Neck stiffness|
|August 14, 2012||Takashi Saito||15-Day DL||Strained left hamstring|
|August 14, 2012||Takashi Saito||15-Day DL||Strained left hamstring|
|September 10, 2012||Ramon Hernandez||Day-to-Day||Left game - Left hamstring strain|
|August 22, 2012||Dexter Fowler||Day-to-Day||Left game - right ankle injury|
|August 20, 2012||Eric Young||15-Day DL||Left intercostal strain|
|August 19, 2012||Michael Cuddyer||15-Day DL||Right oblique strain|
|August 19, 2012||Josh Rutledge||Day-to-Day||Left game - left quad tightness|
|August 14, 2012||Drew Pomeranz||Day-to-Day||Chest soreness|
DENVER (AP) -- The Arizona Diamondbacks are trying to make one last push in the race for the second NL wild card.
The Colorado Rockies are simply trying to avoid history.
Aaron Hill tripled and drove in four runs, Jason Kubel had two hits and two RBIs and the Diamondbacks beat the Rockies 8-7 on Saturday night.
Paul Goldschmidt and Chris Johnson also had two hits apiece for the Diamondbacks, who have won five of six. Arizona remained 4 1/2 back of St. Louis for the second wild card.
J.J. Putz pitched a scoreless ninth for his 31st save.
"We're not out of it. We've still got a little time left," Kubel said. "If we keep this up hopefully we put more pressure on teams in front of us, but we've got to keep it up ourselves."
The Diamondbacks stayed on the fringe of the race with two strong offensive performances in Colorado. They collected 23 runs and 32 hits in the first two games of the four-game series.
"You need every run you can get at this park and really no lead is safe," Kubel said. "We had a great start tonight and had just enough."
Wilin Rosario homered among his three hits and Jordan Pacheco also had three hits for the Rockies, who have lost eight straight. Colorado (58-93) is two losses shy of the club's single-season record and needs to win five of its last 11 games to avoid the franchise's first 100-loss season.
Colorado lost Saturday despite outhitting Arizona 14-13.
"There has to come a time where seven runs and 14 hits are enough," Rockies manager Jim Tracy said.
Both starting pitchers struggled and neither got to the fifth inning. Arizona staked Patrick Corbin to an early lead but he allowed five runs and nine hits in just three innings.
Brad Bergesen (2-0) tossed two innings of one-hit ball to get the win.
"Patrick had a great fastball but he left his secondary stuff up," manager Kirk Gibson said. "When I got him out of there they were working on him pretty good."
Rockies starter Jhoulys Chacin needed 84 pitches to get through four but left with a 5-3 lead. The Diamondbacks then scored five times in the sixth with the help of the Colorado bullpen.
Carlos Torres (4-3) loaded the bases with two walks before Hill tripled to center field. Torres issued another walk before Josh Outman came on and loaded the bases again with the fourth walk of the inning.
Kubel knocked in Hill with a sacrifice fly and Johnson had an RBI single to make it 8-5.
"If they're going to give you free bases we have to take advantage of that," Kubel said.
The Rockies got one back in the bottom half on Matt McBride 's RBI single, and Josh Rutledge scored on Rosario's double-play grounder in the seventh.
Rosario hit his 26th homer leading off the third to establish a franchise rookie record. Todd Helton hit 25 homers as a rookie in 1998.
The Diamondbacks got off to a fast start one night after pummeling Colorado pitchers for 15 runs and 19 hits. Adam Eaton led off with a triple and scored on a groundout. Justin Upton and Goldschmidt doubled and Kubel singled to give Arizona a 3-0 lead.
"I started throwing strikes in the first inning," Chacin said. "They just started swinging and got me. They just hit it where nobody was."
Colorado responded with four in the second. Andrew Brown led off with his third homer of the season, DJ LeMahieu tripled and scored on Dexter Fowler 's single and Pacheco hit a two-run double.
"It's a very difficult chore to ask these guys to keep coming back two or three times," Tracy said. "They get down early, they get us back in to the game, they get us a lead. We have the bad inning and they continue to do more."
NOTES: Rockies OF Carlos Gonzalez (tight left hamstring) did not start but pinch hit in the ninth. He struck out. ... Arizona slugger Miguel Montero has reached safely in 20 straight games. ... Eaton has reached base safely in 14 of his first 15 major league games.