The Celtics  scored the first 14 points of Game 4 and had a 15-point lead at halftime, but they failed to keep that momentum in the second half, as the 76ers came back to win, 92-83, evening up the series at two games apiece. For the 76ers, Andre Iguodala  scored 16 points. Paul Pierce  had 24 points (8-of-13 shooting) and Rajon Rondo  had 15 points to go along with 15 assists. The Celtics look to regain control of the series Game 5 on Monday night back at the Garden.
WHAT WENT WRONG
Benched: Doc Rivers  looked to his bench to hold the fort after the Celtics built a 22-8 lead midway through the first quarter. Things quickly went awry — Philly went on a 10-2 run to pull within six, 24-18. Rondo stopped the bleeding with an old-fashioned three-point play, and the Celtics closed the half on a 22-13 run, taking a 15-point lead into halftime. While the lead was re-established, Rivers would have preferred not to have had the starters expend more energy.
Foul play: The 76ers should have been in contention all night with the lopsided free throw advantage they had. In the first half, Boston took five free throws to Philly’s 21, but the Sixers only hit 13 of those attempts. In the second, half Rivers was forced to go back to his bench after three starters — Brandon Bass , Avery Bradley  and Rondo — had four fouls midway through the third quarter. Philly finished with a season-high 34 free throw attempts.
Board to death: The refs certainly didn’t help Boston’s cause, and the validity of the free throw differential is up for debate, but the C’s should have been more focused on the glass. Neither team had been dominant rebounding the ball until Friday night, when the Sixers had 12 offensive boards through the third quarter. This was critical because the Celtics held Philly to just 32.8 percent shooting but the 76ers were able to have multiple chances at the basket because of their rebounding advantage. Philly finished with 17 offensive rebounds. Meanwhile, the Celtics only had five.
Half the battle: As great as the Celtics were in the first half, they failed to score a field goal in the first seven minutes of the second half. To their credit, the Sixers battled and clawed their way back from an 18-point deficit to tie the game in the opening stages of the fourth quarter. From that point on, the game would be a back-and-forth battle. These scoring droughts from the C’s are nothing new but are still staggering to watch, especially after they displayed incredible efficiency in the first quarter.
Of course, it wasn’t just the offense. The aforementioned rebounding and free throw disparities hurt Boston. Additionally, the Sixers finally flexed their youth, outscoring the Celtics 27-13 in fast break points. Finally, the C’s committed 17 turnovers (including seven from Kevin Garnett  alone).
WHAT WENT RIGHT
Going for the kill: What was more impressive: The C’s scoring the game’s first 14 points, or the fact they only allowed Philly eight shot attempts (the Sixers only hit one) to their 16 shot attempts through five minutes of action? It has been difficult to differentiate between good defense versus bad offense during the lockout-shortened season, but this was a case of the former. The Celtics were relentless in their defensive approach, specifically Rondo and Bradley. Offensively, Boston started the game shooting 7-of-8 from the field. It was clear, the Celtics wanted no part of coming back to Philly for a Game 6.
The maestro: The C’s early dominance was largely because of Rondo’s performance. For the second straight game, Rondo played in complete control, dominating all facets of the contest. He had four assists in the first four minutes, took wise risks defensively, and controlled the pacing. He finished the first half scoring nine points (4-of-6 shooting) to go along with nine assists.
Gone fishin’: Bass had a great regular season for the C’s — first as a reserve off the bench, then as a starter — but he has had an uneven playoffs. In Game 3, Bass showed signs of coming to life, scoring 10 points on 5-of-10 shooting. That confidence carried over into Game 4. In the first half, the 27 year-old scored 13 points, only one point shy of his previous playoff high, knocking down five of the seven shots he took. Bass only had one basket in the second half, however, and finished with 15 points.