Fielder hit two of Milwaukee's six homers, Rickie Weeks connected on a leadoff shot and the Brewers had their biggest offensive outburst in six years Saturday with a 16-2 victory over the Chicago Cubs.
Hardy had four RBI, and Fielder and Weeks each finished with three. It was the first career multihomer game for Fielder, who boosted his average to .348.
"I expected this from him," Hardy said. "He's just such a good hitter that I don't think it really matters where he's hitting. He's just going to find a way to get it done. He's a good hitter. He's a real good hitter."
The Brewers scored their most runs since a 16-8 victory on Aug. 21, 2000, at Arizona. It was their largest margin of victory since May 9, 1996, when they defeated the Red Sox 17-2.
"We were locked in today," Weeks said.
The Cubs were handed their worst defeat since an 18-1 loss in Atlanta on May 20, 1996. The last time they allowed 16 runs was a 16-15 loss at Montreal on May 14, 2000.
Milwaukee starter Doug Davis (1-2) took advantage of the run support in an easy victory. He pitched 6 1/3 innings, allowing one run and five hits with two strikeouts and five walks.
After consecutive shaky outings against Houston and Cincinnati, Davis coasted through the first six innings.
"Seeing Doug get back on track was a big boost," Brewers manager Ned Yost said. "I know it's a boost to him, make him feel good. He threw the ball today much better, commanded the ball much better. But the offense did a really nice job. We tacked on a lot of two-out offense, which was big."
Weeks greeted starter Glendon Rusch with a shot to left that landed on Waveland Avenue. It was the first time in his career that he led off a game with a home run.
"I think anytime you start the game off with a lead it helps everyone relax. It was just nice to see Rickie go up there and do that," Hardy said. "He's a huge part of our team offensively. Once he starts to feel good and do even more, it's going to be a huge factor. It gets stupid when he starts getting good."
Geoff Jenkins doubled one out later and Fielder hit a two-run homer into the right-center bleachers with two outs to give the Brewers a 3-0 lead.
Rusch got the first two outs in the third but then quickly ran into more trouble. He gave up back-to-back homers to Fielder and Hall.
Fielder hit an opposite-field shot that landed in the basket in left, and Hall homered on a 3-2 pitch. Rusch then issued consecutive walks to Damian Miller and Brady Clark. The left-hander was pulled for reliever David Aardsma, who gave up an RBI single to Davis and walked in a run to make it 7-0.
Rusch (1-4) lasted only 2 2/3 innings, allowing seven runs and six hits. He gave up four homers and three walks.
"It's a rough stretch. I'm not getting anything going and I'm leaving pitches up and they're getting hit out of the ballpark," Rusch said. "Other than that I don't have an explanation for exactly why, if I did it would be easier to change it around. I will look at videos tomorrow and see if I can get something going."
Milwaukee batted around in the third with two outs.
Lee tagged Aardsma for his ninth homer in the fourth, tying the Brewers' record for home runs in April. Hardy hit his fourth of the season off Aardsma in the fifth, a two-run shot that made it 10-0.
The Brewers weren't done. They batted around for the second time in the sixth, when Weeks hit a two-run single off Will Ohman and Hardy added an RBI double.
"It's frustrating when you go out there and try to execute and you don't," Ohman said. "A day like today, you take it for what it is and you learn from it, but don't get overly frustrated."
Gabe Gross scored on a wild pitch in the ninth and Clark hit a two-run double, making it 16-2. Milwaukee hit five homers April 22 at Cincinnati, all in the fourth inning.
- Juan Pierre made a diving catch in center, robbing Davis of a hit in the second inning.
- The Cubs' record for most homers allowed in a game is seven set five times, most recently on Sept. 9, 2000, against Houston.
- Cubs C Michael Barrett did not play because of a jammed finger, but did pinch-hit in the seventh inning and walked.