CINCINNATI -- Ryan Braun homered twice, including an eighth-inning grand slam, and first baseman Adam Lind and left fielder Khris Davis added solo shots, lifting the Milwaukee Brewers to an 8-3 victory over the Cincinnati Reds on Wednesday afternoon at Great American Ball Park.

Milwaukee (5-17) hit three homers off Reds right-hander Michael Lorenzen, who was making his major-league debut.

Lorenzen (0-1) allowed eight hits and three runs, all on solo homers. He walked one and struck out five in five innings. He threw 107 pitches, 68 for strikes.

Since taking days off Sunday and Monday, Braun is 4-for-9 with three homers, including a grand slam, and six RBIs.

The Reds and Brewers have combined for 12 home runs in the past two games, including 10 solo shots.

Third baseman Todd Frazier, catcher Tucker Barnhart and right fielder Jay Bruce homered for Cincinnati (10-11) on Wednesday.

Brewers starter Matt Garza (2-3) allowed two runs and five hits in 6 2/3 innings to snap a two-game losing skid.

Frazier put the Reds ahead 1-0 with his sixth home run, which barely cleared the left-field wall.

After cruising through a 1-2-3 first inning, Lorenzen hit a rough patch in the second. Lind crushed his 1-1 pitch into the right-center-field stands for his fourth home run this season, tying the score 1-1. It was Lind's 150th career homer.

Two batters later, Davis launched a 3-2 pitch from Lorenzen 425 feet to center, putting Milwaukee ahead 2-1. It was Davis' first home run since Sept. 5.

Barnhart, a minor-league teammate of Lorenzen, made a brief visit to the mound to calm the 23-year-old.

Lorenzen, an outfielder in college, singled to right field in the second for his first major-league hit.

Milwaukee had the bases loaded with one out in the fourth, but Lorenzen struck out Garza and snared shortstop Jean Segura's hard grounder to end the threat.

Braun's third home run of the season, a 427-foot blast to right-center, put the Brewers ahead 3-1 in the fifth.

Cincinnati cut its deficit to 3-2 on Barnhart's first home run for the season, in the fifth.

Milwaukee sealed the win with a five-run eighth inning, capped by Braun's fourth career grand slam on a 2-2 pitch from right-hander Jumbo Diaz.

NOTES: It was the 21st multi-home-run game for Brewers RF Ryan Braun. ... RF Jay Bruce passed Vada Pinson for 10th place on the Reds' home run list. ... RHP Michael Lorenzen, who had his contract selected from Triple-A Louisville on Wednesday, was the second player this season to make his major-league debut for Cincinnati. ... Reds LHP Manny Parra was placed on the 15-day disabled list with a strained neck and RHP Homer Bailey was moved to the 60-day DL with a right elbow sprain. ... Milwaukee's 5-17 mark is the worst start for a National League team since the 1997 Chicago Cubs began the season 4-18.