MILWAUKEE -- Sean Halton's walk-off home run gave the Brewers a 6-5 victory over the Reds on Sunday at Miller Park.
Trailing all day, Milwaukee tied the game in the eighth.
Pinch hitter Norichika Aoki drew a leadoff walk and moved to second when Manny Parra hit pinch hitter Khris Davis with a pitch. J.J. Hoover came on next and allowed a two-run triple to Jean Segura to make it a 5-4 game.
Segura scored and tied the game at 5-5 on Jonathan Lucroy's sacrifice fly before Caleb Gindl, who had hit a solo home run earlier in the day, grounded out against Zach Duke (1-2) to end the inning.
Jim Henderson (4-5) walked two in the ninth but Carlos Gomez's leaping catch at the wall robbed Jay Bruce of a potential go-ahead home run, sending the game to the bottom of the ninth.
Cincinnati wasted little time in getting to Brewers starter Yovani Gallardo, who came into the game 3-0 with a 1.35 ERA in his last five starts.
The first six batters all reached safely as the Reds took a 3-0 lead before Gallardo finally worked out of the inning. Cincinnati got another run in the third and took a 5-1 lead in the sixth on Todd Frazier's leadoff home run, capping off a 2-for-3 day that included two RBI and a run scored.
Gallardo had settled down by then and made it through six, giving up five runs on seven hits and three walks with five strikeouts.
Reds starter Bronson Arroyo went 6 1/3 innings, scattering three hits and four walks -- three of those coming in the seventh. The Brewers couldn't take advantage, though, scoring just one run to make it a 5-2 game.
NOTES: Cincinnati will reactivate RHP Johnny Cueto Monday and send him to the mound to open a three-game series at Houston. Cueto has been out since June 29 with a strained right lat muscle. Cueto has been on the DL three times this season and is 4-2 with a 3.33 ERA in nine starts this season. ... Reds manager Dusty Baker said Mike Leake and Greg Reynolds would round out the rotation against the Astros. ... Brewers third baseman Aramis Ramirez was out of the starting lineup again Sunday, still recovering after he was hit in the wrist with a Mat Latos pitch Friday night. Ramirez said he would likely be back Monday when the Brewers open a four-game series against the Cubs at Miller Park. ... RF Norichika Aoki got a day off in part to rest his sore knee but has also struggled of late, going 5-for-30 at the plate and 0-for-7 in the last two games. ... Brewers left-hander Tom Gorzelanny played catch before the game Sunday but isn't close to returning to game action. Gorzelanny threw just two pitches before leaving a Sept. 2 game with shoulder tightness.