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Bass slams a putback dunk
NBA 

Celtics G Isaiah Thomas missed one of his five 3-pointers, but Brandon Bass was in the right place at the right time to throw down a one-handed jam against the Cavs.

Play0:21
NBA 

Crowder (knee) exits, J.R. ejected

Jae Crowder sprained his left knee after taking a blow to the face from J.R. Smith and falling awkwardly on his leg. Smith was assessed a Flagrant 2 foul and ejected from the game. Two years ago to the day, Smith was suspended for an altercation against the Celtics in Game 3 of the playoffs.

Kevin Pelton @kpelton

Thinking way outside the box: If J.R. Smith is going to get suspended a game, the Cavs are better off having it be Game 5 of this series.

James agressive in the lane

LeBron drove 14 times in the 1st half today. He averaged 10 drives per game in the first three games of the series. (via ESPN Stats & Info) Watch Live

Dave McMenamin @mcten

Now J.R. Smith catches Crowder with a hand to the face. He's called for a flagrant-2 foul and is ejected. Jae has to be helped off the court

Tough (without) Love
NBA 

The Cavs are significantly better with Kevin Love on the court, but they must play the rest of the way without him after he exited the first quarter with a shoulder injury.

ESPN
NBA 

Perkins, Crowder in altercation
NBA 

Cavs C Kendrick Perkins floored Celtics F Jae Crowder on a blindside pick late in the second quarte. The two got into a heated exchange, with Perkins throwing a slight jab at Crowder.

Play0:26
NBA 

Celts' Thomas out of sync
NBA 

Isaiah Thomas shot 0-for-7 off the bench in the first half to tie his career high for attempts without a make in a half. The C's are shooting 37.5 percent (15-for-40) as a team. Box score

AP
NBA 

Halftime: Cavs 57, Celtics 36
NBA 

After a chippy first half, the visiting Cavaliers hold a 19-point advantage over the Celtics in Game 4, but it came at a cost. Kevin Love left with a shoulder injury in the first quarter and will not return. LeBron James leads three Cavs in double figures with 13 points. Live on ABC/WatchESPN

AP
NBA 

Welcome to Kendrick's 'T' party

Including the playoffs, Kendrick Perkins has 67 technicals over the last 5 seasons -- tied for the 3rd-most in the NBA behind Russell Westbrook and Demarcus Cousins during that span. (via ESPN Stats & Info)

Perkins, Crowder get into it

Cavs big man Kendrick Perkins pushed Jae Crowder to the floor as he set a blindside screen, leading to a shoving match between the two with 1:44 left in the first half. Perkins received a Flagrant 1 foul and both players were assessed double technical fouls. Live on ABC/WatchESPN

J.A. Adande @jadande

Rewound the DVR and couldn't find any squabble with Perkins & Crowder prior to that shove. Guess Perk woke up like this.

LeBron's defense stopping C;s

The Celtics have yet to attempt a field goal with LeBron James as the primary defender. They went 8-of-26 in the first three games with James as the primary defender. Watch live

Dave McMenamin @mcten

Perkins and Crowder get into it after Kendrick pushes Jae to the floor. Then Perk got a left handed jab in on Crowder's face.

Michael Wallace @WallaceNBA_ESPN

Bottom line is Perkins will be ejected. The finger in the face was a bit too much. But point was made. Perkins in there strictly to 'Debo'

Playoff buzzer-beaters to remember
NBA 

Thanks to a buzzer-beater from Jerryd Bayless, the Bucks avoided a sweep vs. the Bulls. Here's a look at other last-second playoff shots, including one from LeBron James for the Heat

Play1:25
NBA 

Arash Markazi @ArashMarkazi

Pop is asked about corner 3s and says this is not a strategy session. Says he's thinking about "pick and roll, Blake Griffin and turnovers."