Steve Carlton pitched a six-hitter to become the first 14-game winner in the major leagues and Mike Schmidt hit his third home run in three nights to lead the Phillies to a 3-1 victory over Chicago last night in Philadelphia. It was the Cubs' seventh straight loss and gave the Phillies a one-game lead over St. Louis in the NL East.

Carlton (14-8) pitched his ninth straight complete game and 11th of the season, best in the NL. He struck out 10 to take over the league lead in strikeouts with 178. He had lost his first four decisions and did not win his first game until April 30.

Carlton did not allow a runner past second base until the eighth inning, when the Cubs scored on a double by pinch hitter Steve Henderson and a single by Gary Woods.

At least one strikeout came on a new pitch with which Carlton is experimenting, a changeup. "You'll see more of it," said Phillies Manager Pat Corrales.

Second baseman Manny Trillo of the Phillies extended his major league record by playing his 89th straight game without an error. He handled six chances to give him 476 straight without an error.