CHICAGO -- The ball is finally starting to carry out of Wrigley Field.
Just not for the Chicago Cubs.
Paul Maholm pitched a shutout for his first victory in a month, Ronny Cedeno, Lyle Overbay, Chris Snyder and Andrew McCutchen each homered Saturday, and the Pittsburgh Pirates routed the Chicago 10-0.
Maholm limited Chicago to just three hits -- a double by Alfonso Soriano and infield singles by Darwin Barney and Lou Montanez.
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While they allowed a season high in homers allowed, the Cubs' offensive struggles at home were nothing new. They've hit just 14 home runs in 27 games at Wrigley Field. And their top four hitters -- Tony Campana, Starlin Castro, Aramis Ramirez and Barney - have combined for three homers on the season.
"The guys are still confident we can turn this around," Barney said. "We're not pulling that flag yet."
With the flags blowing out, the Pirates had little trouble against Cubs starter Randy Wells.
Or anybody else Chicago put on the mound.
Making just his second start of the season and first since April 4, Wells (1-1) lasted four innings after being activated off the disabled list (right forearm strain). He gave up five hits, including Cedeno's second homer, and five runs with three walks and seven strikeouts.
"I don't know if it was so much rust as I was anxious to get back out there and see how things were going," Wells said.
Overbay hit his fifth homer, leading off the sixth against reliever James Russell. And one out later, Snyder sent his second homer of the season over the wall in left to make it 7-0. McCutchen connected off reliever Scott Maine in the seventh, his ninth of the season.
McCutchen led off the fourth with a single and made third on Neil Walker's double to left that Soriano couldn't catch. One out later, Steve Pearce hit a two-run single and after Snyder walked, ex-Cub Cedeno drove a ball over the wall in right center.
But the story for Pittsburgh was Maholm (2-7), who got his third career shutout and improved to 8-2 in 15 career starts against the Cubs.
He retired the first 13 batters he faced before Soriano doubled in the fifth, driving a ball to the center-field wall that McCutchen leaped for but couldn't catch. Montanez then reached on an infield single.
Barney reached on a two-out infield single in the ninth for the only other Chicago hit. Maholm retired the side in order the other seven innings, walked none and struck out four for his first win since April 25.
"After the five-run fourth inning, he went right after hitters," Cubs manager Mike Quade said. "Run support is a wonderful thing."
Pittsburgh had been struggling offensively with only six runs in its previous four games, but broke out on an overcast 61-degree day with their most homers in a game this season.
Cedeno's three-run shot capped a five-run fourth that finally gave Maholm a big early lead.
The Pirates had scored only 13 runs in the left-hander's previous 10 starts.
"Going out there, every pitch wasn't a nail-biter," Maholm said. "Especially with the wind blowing out, if you miss a pitch they can hit a popup for a home run."
Maholm had pitched 6 2/3 innings of scoreless ball at Wrigley Field on April 2, leaving with a 3-0 lead, before the Cubs got five runs in the eighth and he ended up with a no-decision.
This time, Pittsburgh made sure Maholm left with a win.
"He can't control run support - he can't control a lot of other things.," Pirates manager Clint Hurdle said. "But he can control how he pitches. And that's what he's locked down on. Regardless of run support, he has been not just efficient but his confidence has not wavered."
The Pirates are 16-6 in their last 22 games against the Cubs. ... Pearce left the game after the top of the fourth with soreness in his right calf. He was replaced at 3B by Brandon Wood. ... Walker has hit safely in all 14 of his career games against the Cubs. ... Rodrigo Lopez, acquired from Atlanta in a minor-league trade Thursday, will make his first start for the Cubs on Monday against Houston. ... Matt Garza, on the DL with a sore elbow, could throw on the side Sunday. ... CF Marlon Byrd, recovering from facial fractures after being hit near the eye by Boston's Alfredo Aceves last weekend, is consulting specialists this week. ... Jeff Baker (groin) and Reed Johnson (back) were held out of the lineup Saturday. Baker pinch-hit in the ninth. ... Ramirez has one homer all season and that came on April 6.