BALTIMORE, JULY 6 -- What is so rare as a Baltimore Orioles' victory in July? For one thing, a game-winning RBI by Alan Wiggins. The Orioles got both tonight in a 4-1 decision over the Chicago White Sox before 19,135 at Memorial Stadium.

The victory broke a seven-game losing streak for the Orioles (32-50) and was only their sixth victory in the last 36 games, their first since June 27.

If the results were odd, the style was even more so. The Orioles not only got a five-hitter from Mike Griffin and Mark Williamson, but Wiggins' fifth-inning single accounted for the go-ahead and game-winning run. It was his third game-winning RBI in 388 games and the first that came on a hit. He got one last season on a sacrifice fly and another this year on an infield groundout.

The game finished a tense day during which the Orioles staff demoted one player and talked about yet another roster shakeup. It's clear that a couple of veterans, including outfielder Lee Lacy, are on thin ice.

Then after batting practice, owner Edward Bennett Williams spoke to the players and, later, to Manager Cal Ripken Sr. Williams wouldn't tell reporters what he talked about, except to say he had given them his "secret formula" for success.

One thing did get settled today and that's that veteran left-hander Scott McGregor accepted a 20-day demotion to Class AAA Rochester to attempt to iron out his problems. Left-hander Mike Kinnunen will be brought up from Rochester to replace him.

The meetings off the field overshadowed an atypical night on the field, especially the pitching of Griffin (1-2), who got his fifth major league victory and his first since Sept. 11, 1981.

"He had good control and pretty good velocity," Orioles catcher Terry Kennedy said. "He was very aggressive. He said before the game that he had all his pitches, and he used them all."

Griffin was called up from Rochester when the Orioles had no place else to turn. He was the 17th pitcher to wear their uniform this season, and their 10th starter. He hadn't pitched in the big leagues since 1982 and, if expectations were low, they were fulfilled in his first two starts when he allowed eight earned runs in 10 1/3 innings.

Tonight, though, he was outstanding, especially by throwing strikes. He allowed five hits and two runs in seven innings and walked two and struck out six. But more impressive, he had a 2-0 count on only one hitter.

"He did the things we've been talking about all year," Ripken said. "He did the basics. He had people swinging at his change-up, and that made his fastball effective."

Griffin said, yes, it had been a long road back, but that, no, he'd never given up on pitching in the big leagues.

"I really don't remember the last {victory}," he said. "I think it was against the Expos when I was pitching for the Cubs. {It was.} I just tried to get ahead of the hitters, and I had good control. I'd like to have a whole season of games like those."

Williamson then got the ball in the eighth in his first game as the bullpen stopper. Like Griffin, he got the assigment only after others had failed, in his case Tom Niedenfuer. Whatever the reason, he was outstanding, pitching a scoreless eighth and ninth for his third save.

The Orioles got just seven hits off three Chicago pitchers. Eddie Murray hit his 16th homer and had a single, and Wiggins was on base three times with two singles and a walk. Cal Ripken Jr. was also on base three times, and his seventh-inning single scored two runs.

Murray's second homer in as many days got the Orioles a 1-0 lead off White Sox starter Jose DeLeon (5-8) in the second inning. The White Sox tied it, 1-1, in the fifth after Greg Walker led off with a single down the right field line and was given second on fan interference.

Walker went to third on Carlton Fisk's single to right and scored on Steve Lyons' infield grounder. The Orioles came right back for a 2-1 lead in the last of the fifth when Kennedy drew a leadoff walk, went to second on Ken Gerhart's sacrifice bunt and to third on Young's fly to right. Wiggins then bounced a single to center for a 2-1 lead.

Then in the last of the seventh, the Orioles scored twice more for a 4-1 lead. Kennedy drew a leadoff walk and, after Gerhart flied out, Mike Young walked. Wiggins singled off reliever Bryan Clark to load the bases. Lynn lined out, but Ripken's single off reliever Jim Winn scored Kennedy and Young.

Orioles Notes:

Murray's RBI was the 1,064th of his career and ties him with Boog Powell for second place on the Orioles' all-time list. He now trails only Brooks Robinson, who had 1,357 . . . Murray is four for eight with three homers against DeLeon.