Braun has five home runs this season after being suspended for the last 65 games of 2013 following Major League Baseball's investigation into the Biogenesis drug scandal. The other three homers came in one game on April 8 at Philadelphia.
The go-ahead drive came off Pirates closer Jason Grilli (0-1), his second blown save in six opportunities. Jean Segura's two-out single kept the inning going for Braun, who had three hits and three RBIs.
Braun got the Brewers within a run at 7-6 when he hit a solo homer in the seventh off Tony Watson.
Lucroy had an RBI grounder in the fifth to make it a one-run game. Andrew McCutchen made it 7-5 with an RBI double in the Pirates sixth.
NOTES: The Pirates designated 1B Travis Ishikawa for assignment to clear a roster spot for the addition of Davis, activated C Chris Stewart from the disabled list and optioned C Tony Sanchez to Triple-A Indianapolis. . Pittsburgh SS Jordy Mercer did not play because of a sore left ankle. He was injured Friday night when Milwaukee C Martin Maldonado slid into him at second base while trying to break up a double play. . Brewers 1B Lyle Overbay's three-day paternity leave ends Sunday and he will return to the team for the finale of the four-game series. Milwaukee is likely to place OF Logan Schafer, who has a strained right hamstring, on the 15-day disabled list in order to open a roster spot for Overbay. . Brewers RHP Marco Estrada (1-1, 3.06) will face Pirates RHP Gerrit Cole (2-1, 4.74) on Sunday. Estrada is 5-0 in his career against the Pirates with a 2.06 ERA in 11 games, including eight starts.