Jeff Green  scored on a reverse lay-up on a bullet pass from Kevin Garnett  with 0.5 seconds left in the fourth quarter to lift the Celtics  to an unlikely 83-81 road win over the Pacers, Wednesday night at Bankers Life Fieldhouse in Indianapolis. The brilliant play was drawn up by head coach Doc Rivers  and executed by a team that appears to be hitting its stride.
Rivers called for Green to get free on the baseline on a back-pick set by Pierce, with Garnett at the top of the key. That’s exactly how the play unfolded as Green got free underneath , caught the ball under the basket and turned his body just in time to hit the layup off the glass.
Garnett finished with 18 points and 10 rebounds while Paul Pierce  and Avery Bradley  finished with 13 points apiece for the Celtics, who won their fourth straight and improved to a season-best six games over .500 at 33-27. They also improved to 12-4 without Rajon Rondo .
With the Celtics playing their second road game in 24 hours, the Pacers were predictably the stronger team out of the blocks, shooting out to a 27-19 lead after one.
The Celtics got a layup from Pierce right before the halftime buzzer as Boston cut Indiana’s lead to seven, 49-42, at the break.
Garnett made history with a defensive rebound in the first minute of the third quarter. It was his sixth of the game and No. 13,370 of his career, passing Wes Unseld for 10th all time in NBA history.
The Pacers went to their inside game to build the lead to 14, 63-49, midway through the third but the Celtics finished the quarter on a 9-5 run to close to within 10, 68-58, heading into the fourth.
The Celtics pulled to within one, 73-72, on a Jason Terry  three with just over six minutes left, capping a 20-7 run. The Pacers then responded with the next eight points to build a nine-point lead.
As great as the play execution was for the Celtics, Boston was the beneficiary of some highly questionable play-calling on the part of the Pacers. Leading by 14 points and with Roy Hibbert  taking it to the Celtics inside, Pacers fell in love with the three-point shot, finishing a miserable 6-of-27 from long range.
The Pacers had all five starters in double figures, led by Paul George with 16 points. David West had 11 points and 16 rebounds while Hibbert finished with 12 points and 12 rebounds.
The Celtics are off Thursday before returning to action Friday at home against Atlanta at TD Garden. For more, visit the Celtics team page at weei.com/celtics .