BOSTON — The Toronto Blue Jays came to Fenway Park a game behind the Red Sox in the “battle” for fourth place in the American League East.

They left two games ahead.

Forty-five-year-old Omar Vizquel, playing his final game at Fenway, hit his second sacrifice fly of the game off Clay Buchholz with one out in the ninth inning on Sunday to lift the Jays to a 4-3 win and their second straight Fenway sweep.

Vizquel, who is retiring at the end of the season and is likely to wind up in Cooperstown, had just his fourth and fifth RBIs of the year in helping the Blue Jays to their fourth straight win.

The free-falling Red Sox lost their fourth straight, their 11th in the last 12 and 15th in the last 18.

Buchholz (11-6) gave up three runs on four hits in the fourth inning and then retired 13 straight batters before Rajai Davis singled with one out in the ninth. Davis then swiped his 41st base of the year and took third on Anthony Gose’s single.

Beleaguered manager Bobby Valentine came out to the mound and got a hand when he left Buchholz in with 113 pitches.

Gose stole second and pinch hitter Kelly Johnson was walked intentionally with a 2-1 count, before Vizquel hit his fourth straight fly ball to left fielder Scott Podsednik.

Reliever Brandon Lyon (2-2) got the win after facing (and retiring) one batter in the eighth while Casey Janssen worked the bottom of the ninth for his 20th save. It wasn’t easy.

James Loney led off with a single. Cody Ross, who had two hits and a walk earlier, then hit a long foul home run and took a called third strike on a borderline 3-2 pitch. Jacoby Ellsbury then flied to deep center and Mike Aviles fouled out to end it.

Ellsbury (No. 3) and Dustin Pedroia (No. 14) homered off Toronto starter Carlos Villanueva.

NOTES: The Jays have won eight of their last 10 at Fenway, 13 of their last 19 against the Red Sox. ... Gose, a former member of the New Hampshire Fisher Cats, had five RBIs Saturday night and two hits and an RBI Sunday.