Houston will look to end a season-high four-game losing streak and avoid being swept for the first time this season when it wraps up its series against the Milwaukee Brewers on Sunday at Miller Park.

The Astros (30-27) started last month with a three-game home sweep of the Brewers. They went on to win 17 of their first 24 May games, averaging more than five runs while compiling the best record in baseball over that span.

In their last four games, though, they've scored just five total runs, including only one in each of their first two games in Milwaukee - where they've lost seven of their last eight.

After leaving 10 men on base in Friday's 5-1 loss, Houston had just one extra-base hit and had three runners caught stealing in Saturday's 4-1 defeat.

"Pitching stops hitting," Astros manager Cecil Cooper told his team's official Web site. "Same old song. Four days in a row now. We'll get it going."

It seems as though the Brewers (28-28) already have. Milwaukee has won five of six to get back to the .500 mark, and is looking for its first three-game sweep since April 4-6 against San Francisco.

Pitching has carried the Brewers on their current hot streak, as they've allowed seven total runs in their last five wins. Dave Bush (1-5, 6.04 ERA) enjoyed his longest outing of the season Tuesday, giving up two runs in seven innings, although he didn't factor in the decision of Milwaukee's 3-2 win over Atlanta.

The right-hander is 4-1 with a 3.45 ERA in his career against the Astros.

Despite Houston's offensive swoon, slugger Lance Berkman has continued to hit, going 6-for-15 with two doubles and a home run in his last four games. He finished May with a .471 average for the month - best in the majors and an Astros franchise record for May.

Meanwhile, Milwaukee's Prince Fielder is hoping home runs in his last two games portend a stronger June. Fielder had 19 homers and 43 RBIs last year at this time, but has just eight home runs and 29 RBIs in 2008.

"Any time I'm able to produce, it's good," Fielder told his team's official Web site. "Any time anybody's able to cross the plate when I'm hitting, whether it be me or anybody else, that's what I'm striving for."

Fielder has homered in one of his three career at-bats against Houston's Shawn Chacon, who will look for his third straight victory Sunday.

Chacon (2-0, 3.95) had failed to record a decision in his first nine starts, but has gone seven strong innings to win each of his last two outings, allowing just five total runs while striking out 12.

"He's pitched well for the most part all year," Cooper said. "He just had one, I thought, shaky outing about three starts ago but other than that he's kept us in every ballgame and given us a chance."

Chacon made six relief appearances against Milwaukee last year, allowing one run in 6 1-3 innings.