Red Sox 4, Yankees 3

BOSTON - The last-place Red Sox beat the first-place Yankees, 4-3, at Fenway Park Tuesday night as Boston got its third walk-off win of the season.

With Pedro Ciriaco on second and Mike Aviles on first with one out in the bottom of the ninth, Jacoby Ellsbury, on his 29th birthday, drove in Ciriaco with the winning run on a single to left field.

Andrew Bailey, who pitched a scoreless ninth for the Sox, got the win. David Robertson took the loss for the Yankees.

The Yankees jumped out to a quick lead in the first inning against Red Sox left-hander Jon Lester, but the Sox came back in the third to take a 2-1 lead against right-hander Hiroki Kuroda.

In the first, Derek Jeter led off with a walk. He took third on Nick Swisher's double off the wall in left, and scored on Robinson Cano's groundout to first baseman James Loney, putting the Yankees up, 1-0.

In the third, Ciriaco led off with a double down the left field line. He took third on Aviles' groundout to Cano at second base, and scored on Ellsbury's single to center. With two outs and Dustin Pedroia batting, Ellsbury stole second. Pedroia's single to right scored Ellsbury, putting the Sox ahead, 2-1.

Through five innings, Lester had given up one run on three hits and a career-high six walks. But he started the sixth with another walk, to Curtis Granderson, then yielded a single to Andruw Jones before Jayson Nix's sacrifice bunt moved both runners up. Jeter's ground-rule double down the right field line scored both, giving the Yankees a 3-2 lead and ending Lester's outing.

Lester went 5 1/3 innings, giving up three runs on five hits and seven walks and five strikeouts.

Pedroia's 15th home run of the season, with one out in the sixth, took Lester off the hook for the loss.

Neither starter was involved in the decision, as Kuroda went 6 1/3 innings, giving up three runs on eight hits with no walks and six strikeouts.

NOTES: The Red Sox and Yankees held a moment of silence before the game in memory of 9/11...Right-hander Daisuke Matsuzaka, who has struggled most of this season, will stay in the rotation and is scheduled to start Friday in Toronto...Left-hander Felix Doubront, who has also struggled recently while dramatically increasing his workload from last season in his first full big league season, will not be shut down or rested. Doubront is scheduled to make his next start Thursday against the Yankees...Catcher Jarrod Saltalamacchia, who left Friday's game against the Blue Jays with back spasms, was not in the starting lineup again on Tuesday...David Ortiz, who has been on the disabled list with a strained right Achilles tendon and has played just one game since July 16, was scheduled to meet with team doctors on Tuesday to discuss what is next for the Red Sox designated hitter... Lester struck out Steve Pearce for the last out in the fifth inning, the 1,044th strikeout of his career, passing Bruce Hurst for the most by a Red Sox left-hander...Ciriaco entered the game batting .469, going 15-for-32, with seven RBIs, nine runs scored, and four stolen bases, in eight career games, all this season, against the Yankees. . . The run Jeter scored in the first inning was the 1,859th of his career, tying him with Mel Ott for 12th all-time...Swisher's first-pitch double off the wall in the first inning snapped an 0-for-28 slide...Left-hander Andy Pettitte, on the 60-day disabled list since June 28 with a fractured left ankle, did some fielding drills on Monday and is scheduled to throw a simulated game on Tuesday...Team doctors think Mark Teixeira is expected to miss 10-12 days with a strained left calf, but it could be more. He has appeared in just one game since Aug. 27, reinjuring his calf on Sept. 8...The Yankees called up outfielder Melky Mesa from Triple-A Scranton/Wilkes-Barre.