Giants 7, White Sox 1: Jake Peavy picked up his first win since April and San Francisco exploded for seven runs in the seventh inning to avoid a three-game sweep against visiting Chicago.Peavy (2-12), who entered the day with the second-worst run support of any qualified starter in the majors, looked on his way to another tough loss before the Giants exploded in the seventh - highlighted by Angel Pagan's two-run single. The right-hander was charged with one run on four hits and three walks in seven innings as San Francisco snapped a five-game slide and pulled even with St. Louis for the second National League wild-card spot.Jose Quintana (6-9) cruised through the first six innings scoreless but ended up charged with four runs and four hits while striking out seven in 6 2/3 frames. Adam Dunn belted a solo home run and Alejandro De Aza doubled to highlight the White Sox offense.Quintana retired 10 straight batters before Michael Morse's one-out single in the seventh got the Giants started. Adam Duvall followed with a single and Joe Panik's fielder's choice to first originally resulted in an out at home until a review revealed that catcher Tyler Flowers was blocking the plate before receiving the ball, overturning the call and allowing the tying run to cross.Quintana was pulled after a two-out walk and Ronald Belisario came on in relief, immediately yielding Pagan's two-run, go-ahead single and back-to-back RBI singles to Hunter Pence and Buster Posey before being pulled. Dunn's error in right allowed two more runs to score as the Giants piled on.GAME NOTEBOOK: The review of the call at the plate in the seventh and subsequent arguments from Chicago manager Robin Ventura led to another review of where to place the runners on the bases, taking nearly 10 minutes altogether and leading to Ventura's ejection. … Dunn's blast was the 459th of his career and landed in "McCovey Cove" beyond the stands in right. … Peavy improved to 1-3 since joining San Francisco and won for the first time since beating Toronto as a member of the Boston Red Sox on April 25.