Since coming up from Double-A Mobile and making his big league debut on June 1, Peralta leads all rookies in average with a .331 mark and is third in hits with 40.
"He's got a good swing path," D-backs manager Kirk Gibson said. "He's very short to the ball, he swings down through the ball. You don't see him dipping like you see some guys do. He stays pretty short, he's aggressive, he recognizes the ball pretty good."
Peralta was a pitching prospect up until a couple of years ago before converting to the outfield.
"He's done a lot of good things," first baseman Paul Goldschmidt said. "He works hard, he plays hard. He's always doing early work, I see him out in the outfield working with [outfield coach] Dave McKay working on stuff."
Peralta was out of the lineup Tuesday.
"Actually after his last at-bat [last night] he came in and I saw him down there stretching his groin," Gibson said. "He's fine, I saw him in there working out last night, but just trying to be proactive and trying to give him time to recover. He's been playing hard and he's been on base a lot."
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.