The Spurs got off to a red hot start behind Marco Belinelli who had nine points in the first and San Antonio shot 10-18 as a team.
Rajon Rondo kept up his blistering three point shooting going 2-2 for the quarter as the Celts trailed 25-19 after one.
The C's quickly took a one point lead 26-25 early in the second behind a 7-0 run including jumpers from Kris Humphries and Kelly O as well as a three ball from Phil Pressey.
Greg Popovich, concerned about this run, took a timeout with nine minutes to go in the quarter Celtics still trailing by one.
San Antonio got back on track with with a layup from Boris Diaw and a three from Patty Mills on an ensuing possession which extended the Spurs lead to 4.
The Celtics eventually took the lead by two behind Humphries who had one of his best offensive halves of the season as he accounted for four of the next eight Boston points (Bayless had the other four).
The game went back and forth for the next couple of minutes until a Timmy Duncan fader, his only hoop of the half, gave the Spurs a 42-38 lead with three minutes left.
The rest of the quarter the teams mostly traded baskets as the Celts went into the locker room trailing by four 48-44 after a last second drive by Jeff Green.
Kelly Olynyk paced the Celtics with 10 on 4-7 shooting and added an impressive six boards.
Boris Diaw led all scorers with 13.
The third quarter Boston started out hot scoring eight of the quarters first ten points catapulting them to an early lead.
San Antonio countered with a 9-4 run behind Duncan and the Spurs were up 3 as Boston called timeout midway through the quarter.
Kelly Olynyk, who had been having a great game otherwise, missed two free throws late as well as a layup and Duncan continued his strong play scoring 11 in the frame as the Celtics entered the final 12 minutes trailing 71-66.
The Spurs started out the fourth on a tear jumping all over the C's behind a three from Green and more Tim Duncan as the Spurs led 85-76 after a Rondo jumper with 7:23 to play.
Rondo soon thereafter hit his fourth three of the game cutting the San Antonio lead to six with six and a half to play.
Alas, Boston would get no closer as the Spurs then went on an 11-0 run and ended up winning 104-92.
Follow Clint on Twitter @ClintCorey Clint Corey 2/12/2014 09:51:00 PM Tweet