George Bell's sacrifice fly provided the go-ahead run in a three-run Toronto eighth inning and Jim Clancy and two relievers combined on a seven-hitter as the Blue Jays defeated the host New York Yankees, 6-4, last night.

Clancy (11-13) allowed six hits, struck out three and walked two. He allowed only one extra-base hit, a two-out, three-run homer by Dave Winfield in a four-run sixth inning that gave the Yankees a 4-3 lead.

Jimmy Key, the third Toronto pitcher, worked the final inning and earned his eighth save.

After reliever Bob Shirley gave up two hits in 5 1/3 innings of scoreless relief, Mike Armstrong (3-2) came on to pitch the eighth. He walked Damaso Garcia on four pitches.

Garcia stole second, his 41st steal of the season, and scored on Dave Collins' single to left, chasing Armstrong. Collins stole second, his 51st steal, and Jay Howell walked Mitch Webster on four pitches.

One out later, both runners advanced on Howell's wild pitch and Bell hit his fly ball to center, with Collins scoring and Webster moving to third. Pinch hitter Tony Fernandez singled to left to score Webster.

Winfield's second home run in two games was his 18th of the season. It gave him 100 home runs as a Yankee and 1,001 career runs batted in.