For the second consecutive night, the New York Mets needed just one hit to wipe out a deficit and collect a victory.

In Thursday night's 4-3 victory over Chicago, the Mets received the key blow in the seventh inning from Gregg Jefferies, who singled up the middle to score Kevin Elster with the tying run. Len Dykstra later scored the game-winner on a groundout by Mookie Wilson.The previous night, pinch hitter Lee Mazzilli blasted a three-run homer in the eighth inning to lift the Mets to a 4-2 victory over the Phillies.

"This is the kind of game that we've won a lot of (in the past)," Johnson said. "We won't do anything, then they come in bunches."

Elster walked on four pitches by reliever Calvin Schiraldi to open the seventh inning. Pinch hitter Mazzilli fouled out and Schiraldi was replaced by Mitch Williams, 0-1, who walked Dykstra on four pitches.

Jefferies, who entered the game in the seventh when Tim Teufel injured his hip, followed with a single up the middle to score Elster and send Dykstra to third. Wilson hit a grounder to second baseman Ryne Sandberg, who stepped on second for the force but threw too late to get Wilson at first.

"I knew I was going to sit a couple of days and not going to play. But I was glad to get into the game," said Jefferies, who had been benched in favor of Teufel with a .128 batting average. "I was getting bored on the bench. It was a great feeling to hit the ball and see it go up the middle."

"I was happy Jefferies got a big hit," Mets Manager Davey Johnson said. "It breaks the ice."

Dwight Gooden, 3-0, pitched seven innings for the victory, allowing four hits and three runs. Roger McDowell pitched two innings for his first save. The Cubs went hitless after the third inning.

Cubs Manager Don Zimmer defended sending out Schiraldi and Williams for starter Mike Bielecki, who allowed four hits and two runs, one earned, in six innings.

"I did everything from the seventh to the ninth innings I wanted to do," said Zimmer, whose club lost its fourth straight game. "It just didn't work."

Andre Dawson drove home all three Chicago runs with a double and single.

Darryl Strawberry tryed to catch Mitch Webster's double in the third inning and left the game after the inning complaining of tightness in his right shoulder.