Dave Winfield hit a two-run homer and Steve Kemp scored from second base on a sacrifice fly as the New York Yankees came from behind with four runs in the fifth inning for a 7-5 victory over the visiting Toronto Blue Jays yesterday.

Doubles by Buck Martinez and Cliff Johnson, both over Winfield's head in left field, had given Toronto a 4-3 lead in the top of the fifth. Ken Griffey singled to open the Yankees' fifth and Winfield followed with his fourth home run of the year.

The New York fans had booed Winfield as he came to bat, dissatisfied with his efforts in the field. "You hear it," said Winfield. "Sure you hear it. They do that. If I couldn't catch those balls, none of them could, either. But the booing doesn't last long. It's not week-to-week or day-to-day. Sometimes it's only from your at bat until it's time to get in the field."

And when Winfield completed his home run trot, he had a message for the fans. "I said, 'Boo that!' "

Following Winfield's homer, Kemp singled and, after Don Baylor, who had doubled home a run earlier, flied out, Roy Smalley walked. Graig Nettles then sent left fielder Dave Collins to the wall for his long drive. Collins crashed into the fence making the catch and Kemp was able to score from second ahead of the relay. Jerry Mumphrey followed with a double, scoring Smalley.