Hitless in his previous 11 at-bats, Hart smacked two-run shots in the first and fifth innings off Tom Gorzelanny (2-4) to reach 100 homers for his career. He finished with a three-run homer off Doug Slaten with two outs in the eighth.

Prince Fielder also homered for Milwaukee, which has won seven straight at home and 11 of the last 14 overall.

That was plenty of support for Yovani Gallardo (6-2), who retired 12 straight at one point and allowed only one run -- on Michael Morse's homer in the second -- in seven innings.

Hart hit 21 home runs in the first half of last season, made the All-Star team for a second time and signed a $26.5 million, three-year extension later in the summer. But this spring was quickly derailed when he hurt himself in drills and his recovery took longer than expected.

The last thing lacking was his power and he had driven in just one run so far, but he hit his first shot to the opposite field in the first inning after Gorzelanny hit Rickie Weeks to start the game.

Fielder followed with a line drive homer off the batter's eye two batters to put the Brewers up 3-0.

In the fifth, Weeks singled and Hart homered to left field. Ryan Braun extended his hitting streak to 13 games with a double and Jonathan Lucroy singled him in to make it 6-1 in Gorzelanny's last inning.

After Morse's homer, Gallardo retired 12 straight batters until Roger Bernadina led off the sixth with a single. Gallardo struck out nine and scattered five hits.

Nationals reliever Drew Storen's ERA rose from 0.38 to 1.48 after allowing three runs in the eighth.

Yuniesky Betancourt doubled in the first run and Storen was responsible for the two runners Hart drove in with his final blast that made it 10-1.

Milwaukee added its final run on a throwing error, while Washington scored twice in the ninth.

The Nationals came in with the lowest batting average in the majors at .229 and is missing three starters. Adam LaRoche (left shoulder) is headed to the 15-day disabled list, leaving Washington without its first baseman along with third baseman Ryan Zimmerman (abdomen) and center fielder Rick Ankiel (right wrist).

NOTES: Nationals RHP Stephen Strasburg threw a bullpen session in Viera, Fla. for the first time since reconstructive elbow surgery. ... The Brewers claimed LHP Daniel Ray Herrera off waivers from the Reds. ... Brewers OF Nyjer Morgan (broken finger) is expected to play Tuesday and Wednesday in extended spring training rehab starts before returning to Milwaukee. ... Brewers LHP Zach Braddock (sleep disorder) was a late scratch from a rehab appearance in Class-A Wisconsin because of a cracked fingernail. ... Brewers INF/OF Erick Almonte (concussion) was hit in the cheek when a ball deflected off his glove before batting practice. Almonte said he wasn't dizzy from the second head hit, but was expected to see the doctor again.

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Colin Fly can be reached at http://www.twitter.com/cfly