Reprinted from yesterday's late editions

The Baltimore Orioles scored four runs in the fifth inning, three of them unearned, and got a strong pitching performance from Scott McGregor Friday night to defeat the Minnesota Twins, 5-1, and complete a sweep of their two-game series at Memorial Stadium.

The triumph was the 12th in the last 15 games at home for the Orioles, who start a five-game home series against Texas today with a 5.30 p.m. doubleheader. For the Twins, it was their second straight setback after eight consecutive victories.

McGregor scattered eight hits, including there doubles, as he went the distance to pick up his first victory since June 20 and raise his record to 9-8. He did not walk a batter while striking out two.

After 4 1/2 scoreless innings, the Oriolesssent nine men to the plate in the bottom of the fifth. Rick Dempsey opened with a hit to right field. Mark Belanger then slashed a line drive down the left field line. Willie Norwood's throw to the plate from left would have nabbed Dempsey but catcher Butch Wynegar drooped the ball.

One out later, Ken Singleton's whistling grounder caromed off Twin starter Geoff Zahn's left shin and carried to left, allowing Belanger to score from third for the second Oriole run.

Then Eddie Murray doubled to right for his second hit on of the game. Lee May fouled out and Andres Mora walked to load the bases. Doug DeCinces followed by storking a double to left, driving in Singleton and Murray to make it 4-0. That outburst chased Zahn and brought in reliever Roric Harrison, who got Carlos Lopez to fly out to end the inning.

Rod Carew, looking for his 2,000th hit, fell on short as he went 1-4. Carew, who has 15 hits in 23 trips off the Orioles this season, got No. 1,999 on a single to left in the first, but the 12th-year major leaguer was unsuccessful in his next three apprearances.

Orioles Manager Earl Weaver was thumled out of his third game in the last nine days when he protested a second-inning balk call on McGregor by first-base umpire Russ Goetz. Weaver, arguing with Goetz to the streins of "Thank You for Being a Friend" over the public address system, thoughtfully turned his cap backward so the birm would not hinder their chin-to-chin discussion.