(My Sportsbook) - Strong starting pitching has put the Arizona Diamondbacks on the verge of winning a series in Milwaukee for the first time in six years. The club will shoot for a third consecutive victory of the previously-hot Brewers in this afternoon's finale of a four-game set from Miller Park.

Arizona halted the Brewers' four-game win streak with a 5-2 triumph on Friday, then received a gem from ace Dan Haren in last night's 4-1 decision over the Brewers. The All-Star right-hander yielded just four hits and struck out a season-best 11 batters over eight innings to win his third straight start.

Chris Snyder led the Diamondbacks at the plate with a pair of hits, including a two-RBI double that capped a three-run fifth inning. Justin Upton finished 2-for-4 with a solo homer and two runs scored to help Arizona win for the fifth time in its last seven games.

Prince Fielder singled in the lone run for Milwaukee, which had won eight times in a span of nine contests prior to its current two-game skid. Starting pitcher Braden Looper (2-1) threw seven innings in a losing cause, allowing all four Arizona runs on six hits.

The trio of Haren, Jon Garland and Max Scherzer has surrendered just three runs over a combined 20 1/3 innings during the first three games of this series. That outstanding work by those starters has put the Diamondbacks in position to take a series at Miller Park for the first time since the team won two of three matchups from the Brewers from September 19-21, 2003.

Prior to this series, Arizona had dropped 12 of its last 16 games in Milwaukee and suffered a three-game road sweep at the hands of the Brew Crew last season.

The Diamondbacks will send Yusmeiro Petit to the mound in this afternoon's finale. The young right-hander will need to improve off his recent mound trips to match the efforts of his teammates in this series, however.

In three starts and one relief appearance during the season's first month, Petit has been tagged for 17 runs (15 earned), 23 hits and four homers over a 15 2/3-inning span. His most recent outing was the worst of the bunch, as Petit surrendered seven runs on eight hits and walked three before being removed after 3 2/3 innings of an 11-3 loss to the Chicago Cubs on Tuesday.

The 24-year-old Venezuelan, who is taking the place of injured ace Brandon Webb in the Arizona rotation, is 0-1 in three career games (2 starts) against the Brewers, but has recorded a 2.25 ERA during that stretch. In his lone matchup with Milwaukee last season, Petit spun six innings of one-run ball but was left with a no decision of a 4-3 D-Backs loss on July 2.

Petit will be opposed this afternoon by Dave Bush, who will be seeking a return to his exceptional form of two starts back. The right-hander took a no- hitter into the eighth inning of an April 23 win at Philadelphia and held the defending world champion Phillies to one run and two hits in picking up his only win of this season.

Bush wasn't nearly as sharp in Tuesday's home start against Pittsburgh, a game in which he permitted five runs (4 earned) in a five-inning no decision.

That performance raised the 29-year-old's ERA to 5.56 in a pair of starts at Miller Park this season, quite a contrast to Bush's showings at home in 2008, when he amassed a 6-4 record and a solid 3.50 ERA over 17 games (16 starts).

Bush does own a 4-1 career record in five starts versus the Diamondbacks, with the lone blemish coming in Phoenix last June. He was reached for five runs (4 earned) and nine hits through five innings in that game.

In injury news, Brewers outfielder Ryan Braun sat out Saturday's tilt with tightness in his lower back, and it's unclear whether he'll be available for today's game. The All-Star slugger also missed a good portion of spring training with a strained intercostal muscle.

Milwaukee is 11-6 overall against Arizona since the start of the 2007 campaign.