Greg Luzinski hit two towering two-run homers to support the five-hit pitching of Floyd Bannister and give the Chicago White Sox a 4-1 victory tonight over the New York Yankees.

The victory, before a capacity crowd of 44,812, increased the White Sox' first-place lead in the American League West to 4 1/2 games.

Luzinski's first homer came in the first inning on a 2-2 pitch from loser Ray Fontenot (3-1) with Tom Paciorek on base and landed on the left field roof of Comiskey Park, a drive of more than 475 feet. It was his second homer on the roof this season, marking the first time in the ballpark's history that one player accomplished the feat twice in one season.

Only 22 balls have been hit on or over the roof in the 73-year history of the stadium. Jimmy Foxx and Ted Williams also have accomplished the feat twice each, but in different seasons.

Luzinski's second homer, his 20th of the season, came in the third inning off Fontenot, also with Paciorek on base, and landed in the upper deck. The homers were the first two given up in rookie Fontenot's major-league career.

"I've never hit one as high or as far as the first one," said Luzinski. "If the ball hadn't hit the light tower it would have sailed over the roof.

"Sure it feels good when you can hit 'em like that on national TV and before 45,000 people. There's no question about it, I've never hit one like the first one . . . ."

Bannister (8-9) posted his fifth straight victory and third complete game of the year. He retired 11 in a row until he lost his shutout with one out in the seventh on Dave Winfield's 18th homer.

The four-game series drew a club-record 172,264.