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6/8/2014 4:18 P.M. ET

Peralta making strong first impression with D-backs

PHOENIX -- Six games into his Major League career, David Peralta is making an impact with both his bat and his glove.

Peralta is batting .429 (12-for-28) and has a hit in each game in which he has played. Moreover, he made a leaping grab at the wall in the bottom of the ninth that helped put the Rockies away on Thursday.

"[The catch] happened so quick, it happened so fast," Peralta said Friday. "I just saw the line drive, and it was, 'OK, I have to go for it,' and made the catch.

"I saw the pitcher after the game; he came to [me and outfielder Ender Inciarte] and said, 'Hey, thank you guys for making those catches. You saved my life.' I said, 'Don't worry, that's why we did it.'"

But Peralta isn't in the Majors because of his glove. He has hit well at every level he has played. Between playing in independent leagues and the D-backs' system, Peralta has a .347 career average outside of the Major Leagues. Before he got called up on June 1, Peralta was hitting .297 at Double-A Mobile and had an on-base plus slugging mark of .837.

"This is what I have to do," Peralta said. "When you get a callup, you have to keep dong what you're doing from the Minor Leagues, from the Double-A. I have to keep doing what I'm doing and working hard."

Peralta was one of several players who contributed to an offense that drove in a combined 32 runs in the three-game sweep of Colorado last week. Another one of those hitters, catcher Miguel Montero, said Peralta has adjusted well to playing in the Major Leagues.

"He's been great," Montero said on Friday. "He's swinging the bat good. He's just playing good baseball right now. Hopefully, he continues the good work."

Peralta continued his tear in Sunday's 6-5 victory by singling to right field in the fifth inning, breaking the D-backs' record for most consecutive games with a hit by a player starting his Major League career at seven. He also smacked a two-run shot in the seventh inning, the first homer of his career.

Chavez nursing knee discomfort, DL stint possible

PHOENIX -- Eric Chavez has been playing in pain all season.

The D-backs' backup third baseman may head to the disabled list soon to try to recuperate from a left knee issue that has plagued him since the year began.

"I hurt it the day before we went to Australia," Chavez said. "I actually did it when we were playing Cleveland [in Spring Training]."

Chavez said he hurt his knee running, and it has been hampering him in the field and at the plate.

"I'm having trouble driving off my back side and keeping all my weight on my back side," Chavez said. "It's been bothering me for a while, so we'll get through [Sunday's] game and talk about a course of action."

Chavez has played in 43 of the D-backs' games this season and made 80 plate appearances. He's hitting .246 with three home runs.

Chavez has dealt with knee problems for a while. He missed 15 games with a left knee strain last August.

"I don't know what the term for it is," Chavez said. "There's something degenerative going on there because I'm old.

"It's been manageable. We've gotten this far, but I think we want to get to the peak performance."

Manager Kirk Gibson said Nick Evans and Didi Gregorius could be possible backups to third baseman Martin Prado if Chavez goes to the DL.

"It's just kind of degenerative. It hasn't really been good all year," Gibson said. "He's been fighting it ever since Spring Training. He's got a lot of treatment on it, and it just hasn't really strengthened up to the point where we can get on top of it. We play him a little bit and it seems to get weaker."

D-backs feeling confident following walk-off victory

PHOENIX -- The D-backs are hoping to ride the momentum from their walk-off win on Saturday and use it as a springboard moving forward.

"Nothing too much," said Gerardo Parra, who hit the game-winning blooper. "This guy makes one pitch and just let me put it in play."

The D-backs have been playing much better after starting the season 8-22. They've won four of their last six series heading into Sunday's rubber match against the Braves.

"It was a great win," manager Kirk Gibson said. "We dug deep, we did it against some very good pitching.

"It was disappointing when we gave up the lead and gave up the lead again. To our credit, we kept the accelerator down and took what was given to us."

Saturday's 4-3 win was the D-backs' third walk-off victory of the season. The last one was center fielder A.J. Pollock's walk-off homer against the Padres on May 27.

Pollock watched last night's walk-off from the bench, sidelined with a broken hand that will keep him out for 6-8 weeks. But that didn't stop him from being involved in the game.

"I felt like I was in there. It was great," Pollock said. "It was a great win for us. Best closer in the game [Craig Kimbrel] out there going for a save … and we were able to scratch out a run and battle back."

For a season that has been so frustrating, Gibson said the win was a good indicator of better things to come.

"That's a great sign. That's great growth, I think," he said. "We've been working to a lot of things all year, and starting to see some of it come to fruition."

Adam Lichtenstein is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.