PITTSBURGH (AP) — Dave Bush pitched seven shutout innings and the Milwaukee Brewers rocked Pittsburgh starter Charlie Morton to beat the Pirates 8-1 on Tuesday night.

Bush (1-0) allowed three hits and four walks for the Brewers, who took a big early lead for the second consecutive game.

Ryan Braun and Casey McGehee each drove in runs during both the first and second innings as Milwaukee charged Morton with six runs two days after scoring 10 in the first inning of an 11-7 win at Washington.

Rickie Weeks went 2-for-3 with two RBIs, Corey Hart homered and Alcides Escobar had two hits and scored two runs for the Brewers.

Morton's ERA climbed to 16.55 after he allowed five runs while retiring only three batters. He gave up six hits and three walks with one strikeout. The first five batters who faced him in the second reached base.

Morton (0-3) has allowed 20 runs and 23 hits in 10 1-3 innings this season.

Andrew McCutchen went 3-for-4 with two doubles for the Pirates, who had a three-game winning streak snapped.

Pittsburgh has a winning record at 7-6 despite being outscored 83-54 this season. The Pirates have been outscored 57-13 in their losses.

Braun doubled in Jim Edmonds, McGehee drove in Braun with a single and Prince Fielder scored on a Hart groudout in the first. Escobar scored on a Weeks single, Bush made it 5-0 when Morton issued a bases-loaded walk to Braun and McGehee hit a sacrifice fly to drive in Weeks in the second.

Weeks had an RBI triple in the third and Hart hit the first pitch of the fifth over the center-field wall for his second homer of the season, making it 8-0.

Bush had left each of his two previous starts with the Brewers winning but the team lost both games. That would not be an issue Tuesday, despite Lasting Milledge driving in McCutchen with a double in the eighth.

NOTES: Delwyn Young started at third base for the Pirates — the team's third choice for the position. Regular 3B Andy LaRoche missed his third consecutive game after leaving Friday's game in the second inning due to back spasms. Then 90 minutes before gametime, replacement Bobby Crosby was scratched from the lineup due to left shoulder stiffness. ... McGehee has a career-high nine-game hitting streak. ... After using 12 different lineups the first 12 games, the Brewers finally replicated a previous lineup.