- Associated Press - Monday, April 14, 2014

PHILADELPHIA (AP) - Chris Johnson stepped back, heaved up a desperation 3-pointer and watched it fall in to tie the game with 0.9 seconds on the clock.

Or so he thought.

As it turned out, Johnson stepped back a little too far, and the shot was discounted immediately when officials ruled he stepped out of bounds. The 76ers were awarded possession, and James Anderson made a pair of free throws a half-second later to seal Philadelphia’s 113-108 win over the Boston Celtics on Monday night.

“That’s that,” 76ers coach Brett Brown said. “His foot was out of bounds.”

Philadelphia led by 19 points in the second quarter, but Johnson hit 3-pointers on consecutive Boston possessions to trim the deficit to two as part of a 14-3 run to close the third quarter.

After an 11-4 Philadelphia run to open the fourth quarter, Boston flirted with a comeback and got within two points several times down the stretch but could never pull even. The Sixers aided the Celtics‘ near comeback with dismal foul shooting - they were 24 for 38 from the line.

“We missed free throws, Rondo was Rondo, Johnson made some shots,” Brown said. “But I’m pleased we were able to find a way to win.”

Michael Carter-Williams had 21 points and 14 rebounds and Tony Wroten scored 20 points for the Sixers in their final home game of the season.

“It was great to win at home,” Carter-Williams said. “It was great to end on a positive note.”

Carter-Williams had a key steal and pass to Wroten in the final minutes which led to Wroten making two free throws in helping keep the Sixers ahead.

“His ability to change things and lead breaks after he rebounds makes him unusually good,” Brown said. “And I think he was pretty darn good tonight.”

Kelly Olynyk scored 28 points to lead the Celtics. Jeff Green had 27 points and Avery Bradley added 23. Rajon Rondo finished with eight points, 14 assists and 11 rebounds.

“We definitely got a lot to play for, and it showed tonight. We could’ve laid down when we were down,” said Brandon Bass, who finished nine points and eight rebounds for Boston. “We kept fighting and made it a game.”

Philadelphia took three of four games from Boston in winning the season series for the first time since 2006-07.

The banged-up Celtics played without Jared Sullinger (left ankle sprain), Jerryd Bayless (hyperextended right knee) and Kris Humphries (sore right knee).

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