It was clear from the opening tip – when KG fist-pounded every starter on both teams – with one notable exception. He greeted eight starters, then made his way to Keith Bogans, greeted him and wished him well before walking right past Joakim Noah . Garnett – for the most part – productively channeled his dislike for his arch-nemesis.
Garnett had a double-double by halftime and led a defensive charge in the third quarter as the Celtics  beat the Bulls, 104-92, Friday night at TD Garden.
Aside from the Celtics winning their sixth straight to improve to an Eastern Conference-best 15-4, the other highlight for the fans was the surreal chants of “SCAL-A-BRINE” several times in the fourth quarter, with the Celtics comfortably ahead.
WHAT WENT RIGHT FOR THE CELTICS:
Garnett was a monster: KG made it clear early he would not be denied, either offensively or on the glass. He finished with 20 points and 17 rebounds in arguably his most energetic game of the year. Garnett only had one true run-in with Noah, getting in Noah’s face after a 10-foot turnaround with 2:24 left in the second quarter. Both players were T’d up but nothing much happened the rest of the way.
Rondo got up: Everyone and their brother and sister went silent with 4:54 left in the third quarter when Rajon Rondo  cut through the lane, jumped up in the air on a pass and landed awkwardly. Rondo’s right leg slipped on the landing and his left leg stuck in the floor. He immediately held his left knee and remained on the court about 30 seconds. He got up and stay in the game and immediately hit a 22-foot jumper, showing everyone he was ok.
Turning up the D: Led by Garnett down low and Pierce on the wing, the Celtics showed a dominant defensive effort. After allowing 29 points in the second quarter, the Celtics held the Bulls to 19 in the third, building their lead up to 82-67 after three. The Bulls made just 6-0f-19 from the field in the third quarter as the Celtics got back to basics.
WHAT WENT WRONG FOR THE CELTICS:
A defenseless bench: When you look at the stat sheet, you see that the Celtics reserves can score with anyone – and they can. It’s the defense that’s troubling, like in the second quarter, when the Bulls shot 53 percent and outscored the C’s 29-22. It’s certainly understandable that without the injured Delonte West  and Jermaine O’Neal , the depth isn’t there for the Celtics. But they’re going to need more than just “Sixth Man of the Year” favorite Glen Davis  to produce. Semih Erden is still finding his way and managed some very important minutes late in the third and early fourth quarter as Shaquille O’Neal  sat on the bench with five fouls. They were lucky that the Bulls bench was just as ineffective. Nate Robinson  (sore left foot) was clearly not the same player and Marquis Daniels  had eight points in 26 minutes.
Foul trouble: With 9:28 left in the fourth quarter and the Celtics up, 84-70, Glen Davis went to the bench with his fifth foul, joining O’Neal with the same number. That’s not good. Boston’s two best bruisers – and only bruisers – were not available against a Bulls team that relies on finesse and quickness from players like Noah, Luol Deng and of course, Derrick Rose . That played right into the Bulls’ hands.
Leaking leads: Maybe it’s splitting hairs, but for the second straight game, the Celtics built what appeared to be a very comfortable lead at home, leading by 17 in the third quarter and by 15, 82-67, heading into the fourth. The Bulls made a charge early in the fourth. It’s a nasty habit that bears at least some attention, especially on your home court, where the Celtics improved to 9-1 this season.