With two of its starters winning complete games the previous two nights, the Orioles pitching staff was beginning to regain its form of past years.

But tonight, the staff returned to its 1985 disposition as the Milwaukee Brewers had 12 hits, including home runs by Cecil Cooper and Billy Joe Robidoux, in defeating Baltimore, 5-2, before 14,258 at Memorial Stadium.

The Brewers' victim was Mike Boddicker (12-17), who allowed eight hits in 4 1/3 innings.

"He got hit for the first time in four or five games," Orioles Manager Earl Weaver said of Boddicker, who lost his fourth straight and is tied with Milwaukee's Danny Darwin for most losses in the league. "He had a little stiffness in his shoulder warming up. It looks like the knee is still bothering him. You can't do it every night. I predict he will win 18 or 20 games next year."

Bill Wegman (1-0) won his first major league game, lasting 5 2/3 innings. Bob McClure shut out the Orioles the final 3 1/3 innings for his first save.

Boddicker was shaky from the outset. In the second inning, he gave up Robidoux's first major league home run.

Boddicker ran into trouble again in the fourth. With one out, Robidoux singled, Paul Householder doubled and Gantner was intentionally walked to load the bases. One out later, Paul Molitor walked to give the Brewers a 2-0 lead. Earnest Riles then hit a sharp line drive that shortstop Cal Ripken caught.

Baltimore's Eddie Murray hit his 30th homer in the fourth.

In the fifth, Boddicker gave up Cecil Cooper's 16th home run and, with one out, Ben Oglivie singled. Nate Snell relieved Boddicker.

Wegman was tested in the fifth. With two out and two on, Ripken, batting .480 in his previous eight home games, was up. Brewers Manager George Bamberger made a trip to the mound with the count one-and-two, and on the next pitch, Ripken flied to right.

The Brewers scored twice in the sixth. Gantner singled and eventually scored on Riles' single. Molitor scored when second baseman Kelly Paris booted a grounder.