WASHINGTON — John Wall scored 26 points, including Washington’s last 10, and the Wizards rallied for a 133-132 win over the Boston Celtics in double overtime Monday night.

Wall added a career-high 17 assists, Paul Pierce scored a season-high 28 against his former team and Marcin Gortat had 21 points and 12 rebounds for Washington, which outlasted the Celtics to salvage the finale of the home-and-home series after losing Sunday in Boston.

Washington squandered a 23-point third-quarter lead before rallying in both overtimes.

Jeff Green led Boston with 28 points, rookie Marcus Smart added a career-high 23 and Kelly Olynyk finished with 19 points and 11 rebounds.

The Celtics led by as many as seven in the second extra period, but Wall’s jumper pulled the Wizards to 132-130 with 53 seconds left.

After Smart missed a 3-pointer, Bradley Beal rebounded and passed to Wall, who drove to the basket, scored and made a free throw for a three-point play that put Washington ahead 133-132 with 44 seconds remaining.

Boston, which had won three straight, had a chance after a miss by Wall, but Evan Turner’s jumper with 0.9 seconds left was long.

Celtics reserves played heavy minutes after sparking the rally and accounted for 82 points.

Boston led by seven late in the first overtime as well, but Pierce tied the score at 121 with a 3-pointer with 39 seconds left. Both teams missed shots in the final 10 seconds.

With the Celtics trailing 110-107 after Washington’s Kris Humphries hit one of two free throws with 16 seconds left, Olynyk missed a 3, but Green rebounded and Turner (18 points) sank a corner 3 with 0.9 seconds left to force overtime.

The Wizards led 88-65 late in the third before Boston rallied.

Washington was still up 102-88 in the fourth quarter before going 4:39 without a point.

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