He's just another of the Milwaukee Brewers' four or five kid pitchers and, at 23, has an 89-mph sinking fastball and a nasty breaking pitch.

One night after they met Juan Nieves, the Baltimore Orioles came up against rookie Billy Wegman, who threw a six-hitter as the Brewers won for a second straight time -- 6-3 before 11,891 at County Stadium.

Wegman helped beat the Orioles on an evening when Manager Earl Weaver received his first ejection of the season and the 94th of his hot-tempered career.

Weaver got it with a 2-1 count on Milwaukee shortstop Ernest Riles in the fifth inning. Before Weaver exited the field, he walked over to home-plate umpire Rocky Roe, who had given him the rest of the night off, and covered the plate in dirt.

He also said a few words to Roe and a few more and then even a few more before finally stepping down into the dugout.

"It made no sense," Weaver said. "I yelled, 'We're not getting that pitch.' He looked in the dugout, and I said, 'What are you looking in here for?' I know he can't do his job if he's looking in here. He yelled, 'You're gone.' "

At the time, the Brewers had a 4-1 lead. Two pitches later, Riles deposited a Scott McGregor fastball over the right field fence for a 6-1 lead.

In all, McGregor (5-5) allowed eight hits and five earned runs in 4 2/3 innings. He was down by 4-0 after one inning. He may not have pitched well, but he didn't get any help from Tom O'Malley, who gave the Orioles their 20th error at third base this season, which cost McGregor a run.

Not that it mattered, because the Orioles were able to do almost nothing against Wegman (2-5). They had runners on base in only four innings as Wegman retired nine Orioles in a row at one point and 12 in a row at another.

The loss meant the Orioles matched their longest losing streak of the season -- two games -- and fell back to four games out of first place. At 33-22, they remain in second place in the American League East, but only percentage points in front of the New York Yankees.

"Baltimore is a good hitting team, but I've been fortunate to have good outings against them," Wegman said. "This is a building thing among our pitching staff. We're young, and it took a while for us to jell. But we're going good right now."

The Brewers drained the suspense from this game in the first inning when they sent nine men to the plate and scored four times. But McGregor didn't have to shoulder all the blame.

O'Malley's error cost him one run and Rob Deer's bloop single to center another. Still, he walked a batter and had three balls hit hard.

Mike Felder led off with a triple to the base of the wall in right-center and, after Robin Yount walked, Cecil Cooper lined a run-scoring single to right.

Yount went to third on Cooper's hit and scored when Deer looped his single in front of center fielder John Shelby for a 2-0 lead.

McGregor got Ben Oglivie on a popup to O'Malley at third, but Dale Sveum doubled to left to score Cooper for a 3-0 lead.

Riles then hit a slow bouncer toward first baseman Eddie Murray, and when Deer tried to score from third, Murray threw him out. The Orioles should have been out of the inning when Juan Castillo hit a routine grounder toward O'Malley, but the third baseman bobbled it, allowing Sveum to score and making it 4-0. Rick Cerone then grounded out to end the inning.

The Orioles made it 4-1 in the fourth inning when Cal Ripken tripled to center with one out and scored on Murray's single. That was it because Larry Sheets grounded into a double play to end the inning.

If that got the Orioles back in the game, they didn't stay there long. Deer singled to lead off the last of the fifth and, two batters later, Riles hit a towering homer to right to make it 6-1.

Weaver's dismissal came just before Riles' swing.

"I just don't understand umpires," Weaver said. "If he's going to throw me out for yelling, 'What are you looking at?' I'm going to get thrown out a lot."

Roe's explanation was succinct.

"I just think Earl came to the park in a bad mood," Roe said. "He'd been yelling before that pitch, but when I was looking in the dugout, I wasn't looking for him. I'm being absolutely honest about that. It's a habit I have. I was looking in the Milwaukee dugout. Then he yells, 'What are you looking at?' That gave him the confrontation he wanted, and I decided I wasn't looking at him anymore tonight."

Two pitches later, McGregor joined Weaver in the clubhouse, having made his shortest appearance since May 4. After 12 starts, McGregor's ERA has crept up to 4.92, which is worse than last season's 4.81 disaster.

"The bloop hit cost him a run and the error cost him a run," Weaver said, "so he should only be down 2-0 after the first and that's a well-pitched game, at least until the homer."

Young's fourth homer closed the margin to 6-2 in the eighth and the Orioles got another in the ninth when Lacy singled again and Murray doubled off the wall in center. Murray, however, was thrown out trying to stretch his hit into a triple.