5:50 4th quarter, Celtics 88-74: What's a 5-0 run when you can add five more? Wallace knocks down a three and Garnett throws down a dunk on the break to put the Celtics back up by double-figures.
7:55 4th quarter, Celtics 83-74: Old Paul Pierce, same tricks: Pierce's three-pointer gives the Celtics some cushion and forces a Cavs timeout.
9:34 4th quarter, Celtics 78-74: Don't think the Cavaliers are just going to go away. Back-to-back threes by LeBron have Cleveland very much in this thing.
End 3d quarter, Celtics 76-67: The Celtics captured the momentum back in the third quarter, but they haven't captured enough of a lead to put this game out of reach. Paul Pierce found himself in the quarter, overcoming that first-half foul trouble to score eight points in the third.
1:53 3d quarter, Celtics 73-61: Consecutive three-pointers by Rasheed Wallace and Paul Pierce give the Celtics their largest lead of the game.
3:31 3d quarter, Celtics 67-58: So. Loud. A 7-0 run by the Celtics, punctuated by a Kevin Garnett jumper, has this building louder than it's been all season. The Celtics have withstood one Cavaliers run and come back with one of their own.
6:56 3d quarter, Celtics 57-55: Kendrick Perkins and Shaquille O'Neal pick up double-technicals as the players get their arms tangled up. Less scoring and more intensity here in the second half.
10:21 3d quarter, Cavaliers 55-51: Bad start to the second half for the Celtics as the Cavaliers reel off six straight points to start the third.
Halftime, Celtics 51-49: Two surprises: Mo Williams has 20 points for the Cavaliers, and Tony Allen is playing like it's 2006. Allen's thunderous dunk was the last scoring play of the half and is sure to be seen on the highlights all week.
Williams's production was seen by no one. He's 7 of 10 from the field, a shocker for a guy averaging 11 points and under 40 percent shooting for the series. The Cavaliers need an x-factor. If Williams can be that guy they're a much more dangerous team.
2:48 2d quarter, Cavaliers 43-42: Well the Cavaliers have the lead, and that thought doesn't sit particularly well with any of the Celtics fans here. Cleveland's turned the ball over 12 times and yet the Cavs lead.
5:14 2d quarter, Celtics 41-36: Foul trouble is mounting for the Celtics. Paul Pierce and Rasheed Wallace each have three, Rajon Rondo, Tony Allen, and Ray Allen each have two. The Cavs are making a run because they're taking it to the basket and drawing fouls.
8:45 2d quarter, Celtics 33-29: Paul Pierce picks up his third personal foul. That's huge for the Celtics as Pierce should be on the bench the rest of the half.
10:42 2d quarter, Celtics 33-23: Defense leads to offense as Ray Allen breaks free for the stuff over Mo Williams. LeBron James started the quarter on the bench but came right back in after that bucket.
On the very next play, Tony Allen intercepted a lob meant for James and ignited a Celtics break, finishing off a delayed pass from Rajon Rondo. This is so similar to Game 4, where the Celtics used defense to lead to easy transition buckets. Cleveland needs to stop turning the ball over or this one's going to get out of hand in a hurry.
END 1st quarter, Celtics 25-22: Neither team will hate this start, neither will love it. The Celtics like it because they have the lead and are holding Cleveland to 40-percent shooting. The Cavs like it because despite that poor shooting they're just a possession away. LeBron James has 9 points and 5 rebounds already, but he's also turned the ball over three times.
1:01 1st quarter, Celtics 22-19: This is the LeBron James portion of the updates. James fouled Rajon Rondo going for a steal in the backcourt -- it clearly appeared as if James bumped Rondo, but LeBron argued vehemently against the call. The crowd loved that.
The crowd also liked chanting "New York Knicks" at James when he took free throws a few minutes earlier.
4:28 1st quarter, Celtics 20-13: Mo Williams makes himself useful, driving to the basket for the bucket and the foul. Pierce picks up his second foul and is replaced by Tony Allen.
7:13 1st quarter, Celtics 14-7: The Celtics are picking Cleveland apart on defense. The C's have hit 7 of 11 shots from the floor, most of them dunks or lay-ups. It's a strong start.
8:00 1st quarter, Celtics 10-7: Lots of action so far. Anthony Parker picks up his second foul, replaced by Paul Pierce. Too early to make any determinations on this game other than that it will be a blast.
10:30 1st quarter, Celtics 6-2: A loose-ball foul on LeBron James coupled with a 3-3 start for the Celtics has this crowd into it from the start.
Pregame: Cautious optimism. Palpable optimism, but cautious. That's how I'd describe the atmosphere inside TD Garden about 20 minutes before tip. Jay-Z is blaring on the soundsystem: It's a case of the Celtics using one of the other team's motivational weapons against them. It's dirty, but will it work?