For the second straight game the Celtics  started poorly on the road and found their legs after halftime, and the result was another comeback win, as the Celtics rallied late to beat the Knicks, 96-86. The Celtics have been living dangerously, but perhaps they are proving something to themselves right now, as well. They can’t expect to play passively and win. Now they have to do it 48 minutes again.
WHAT WENT RIGHT
Rondo rallies: The point guard has been showing signs of coming out of his funk, but on Monday, he has still not looked like the Rajon Rondo  of old. In the first half he pulled off a trio of Rondo-esque moves that stood out as the only first-half highlight. He carried that momentum into the second half and finally recorded double-digits in assists (12), his first in eight games, and finished with 13 points on 15 shots. It was by far his most aggressive outing in weeks.
Kevin Garnett  leads second-half surge: It didn’t take long for an indication that the Celtics were not going to roll over in the second half. Garnett made sure of that, scoring their first eight points of the third quarter and throwing down a vicious transition dunk on Ronny Turiaf. He made many big plays in this game, but perhaps his biggest came when he chased down a loose ball and dove into Amar’e Stoudemire to force a jump ball.
Great theater at the MSG: The Celtics have played two games in New York this season and both have been classics. While this one lacked the drama — and quality play — of the December matchup, it every bit as intense. Allen left the game after catching an elbow that drew blood. Later, Carmelo Anthony got busted up after colliding with Rondo in mid-air. The Celtics showed better poise and more toughness down the stretch, but if these two teams meet in the playoffs expect the drama to be thick.
WHAT WENT WRONG
Second-unit struggles: One game after using a tight eight-man rotation in a win over the Hornets, Rivers went back to a platoon-style lineup using five reserves to start the second quarter. Four minutes in, the five had not scored a point and the Knicks were on their way to building a double-digit lead. The reserves went 2-for-10 in the first half, and while the 51-37 halftime deficit wasn’t all on them, they started the downhill slide.
Glen Davis  had one of those nights: This was the bad version of Big Baby for the first three quarters. The one that misses jump shots and then allows himself to get outworked and outhustled by the likes of Turiaf — another undersized post player who relies on toughness and energy. Davis’ night was summed up by the flop he took on a phantom elbow by Anthony. While Davis lay on the ground, the Knicks raced downcourt.
On nights when his shot doesn’t fall, he still has to bring defense and energy to the game and both were in short supply until the fourth quarter when he brought both. Not surprisingly, the Celtics played much better defense. Davis is not a luxury player anymore. He has to anchor their defense every night.
Ray Allen’s tough night: Allen had a rough night shooting (4-for-15) and he took an even rougher elbow to the head that drew blood and sent him back to the locker room. But Allen returned — without stitches — and capped the night off with a clinching layup.