Omar Vizquel hit a pair of sacrifice flies, including one in the ninth inning that lifted the Toronto Blue Jays over the free-falling Boston Red Sox 4-3 on Sunday.
Toronto entered the series in last place in the American League East but left Fenway Park two games ahead of the Red Sox. The Blue Jays have won four straight overall and six in a row against Boston.
Jacoby Ellsbury and Dustin Pedroia homered for the Red Sox, who have lost four in a row and 10 of 11.
Reliever Brandon Lyon (2-2) got the win and Casey Janssen picked up his 20th save.
Boston got a strong start from Clay Buchholz (11-6) but failed to give him much run support.
Buchholz allowed four runs on seven hits over 8 2-3 innings, retiring 13 straight batters before Rajai Davis blooped a single with one out in the ninth. Davis promptly stole his 41st base and took third on a single by rookie Anthony Gose, who hit his first career homer Saturday night and drove in five runs.
Embattled Boston manager Bobby Valentine came to the mound and was booed loudly, then cheered when he let Buchholz try to get himself out of the jam. Gose stole second and the Red Sox intentionally walked Kelly Johnson to load the bases for Vizquel.
The 45-year-old infielder came through with a fly ball to left that was deep enough to score Davis and end the afternoon for Buchholz.
James Loney singled to open the Boston ninth and Cody Ross nearly won it on a drive to left that was just foul. Ross ended up striking out on a pitch he felt was outside enough that he was trotting toward first when umpire Clint Fagan called it a strike.
Ellsbury flied out to deep center for the second out, then Mike Aviles hit a foul pop that catcher Jeff Mathis got under easily to complete the sweep for the Blue Jays.
NOTES: Boston activated OF Daniel Nava, who had been out since Aug. 25 with a sprained left wrist that has been nagging him this season. Nava pinch hit to lead off the eighth and grounded out. ... The Red Sox are in last place in the AL East, marking the latest in a season they have held at least a share of last place since September 1997 ... Boston 3B Will Middlebrooks, on the DL with a right wrist fracture since Aug. 11, turned 24 Sunday. ... Toronto tied a franchise single-season record with its sixth straight win against Boston, matching the club record set from June 2-11, 1988. ... The Blue Jays improved to 10-5 against the Red Sox this season, clinching their first season series victory against Boston since 2006.