| 12:00 | Kristaps Porzingis vs. Daniel Gafford (Derrick White gains possession) | 0 | 0 |
| 11:43 | Jrue Holiday misses two point shot | 0 | 0 |
| 11:41 | Spencer Dinwiddie defensive rebound | 0 | 0 |
| 11:33 | Spencer Dinwiddie makes 25-foot three pointer | 3 | 0 |
| 11:21 | Kristaps Porzingis misses 6-foot jump bank shot | 3 | 0 |
| 11:19 | Daniel Gafford defensive rebound | 3 | 0 |
| 11:02 | Kyrie Irving makes 5-foot driving floating jump shot | 5 | 0 |
| 10:52 | Jaylen Brown misses 24-foot three point jumper | 5 | 0 |
| 10:49 | Daniel Gafford defensive rebound | 5 | 0 |
| 10:44 | Kyrie Irving misses running pullup jump shot | 5 | 0 |
| 10:41 | Jaylen Brown defensive rebound | 5 | 0 |
| 10:35 | Daniel Gafford shooting foul | 5 | 0 |
| 10:35 | Kristaps Porzingis makes free throw 1 of 2 | 5 | 1 |
| 10:35 | Kristaps Porzingis makes free throw 2 of 2 | 5 | 2 |
| 10:22 | Derrick White shooting foul | 5 | 2 |
| 10:22 | P.J. Washington misses free throw 1 of 2 | 5 | 2 |
| 10:22 | Mavericks offensive team rebound | 5 | 2 |
| 10:22 | P.J. Washington makes free throw 2 of 2 | 6 | 2 |
| 10:04 | Jrue Holiday makes two point shot | 6 | 4 |
| 9:54 | Spencer Dinwiddie makes 2-foot two point shot | 8 | 4 |
| 9:42 | Jrue Holiday misses 25-foot three point jumper | 8 | 4 |
| 9:40 | Daniel Gafford defensive rebound | 8 | 4 |
| 9:33 | P.J. Washington misses two point shot | 8 | 4 |
| 9:33 | Daniel Gafford offensive rebound | 8 | 4 |
| 9:29 | Daniel Gafford makes two point shot | 10 | 4 |
| 9:21 | Derrick White misses 26-foot three point jumper | 10 | 4 |
| 9:18 | P.J. Washington defensive rebound | 10 | 4 |
| 9:11 | Derrick White shooting foul | 10 | 4 |
| 9:11 | P.J. Washington misses free throw 1 of 2 | 10 | 4 |
| 9:11 | Mavericks offensive team rebound | 10 | 4 |
| 9:11 | P.J. Washington makes free throw 2 of 2 | 11 | 4 |
| 8:51 | Daniel Gafford blocks Jrue Holiday 's 26-foot three point step back jumpshot | 11 | 4 |
| 8:51 | Kyrie Irving defensive rebound | 11 | 4 |
| 8:41 | P.J. Washington misses two point shot | 11 | 4 |
| 8:41 | P.J. Washington offensive rebound | 11 | 4 |
| 8:33 | Kyrie Irving makes 16-foot pullup jump shot (Daniel Gafford assists) | 13 | 4 |
| 8:14 | Jayson Tatum makes 15-foot two point shot | 13 | 6 |
| 8:01 | P.J. Washington makes driving layup (Spencer Dinwiddie assists) | 15 | 6 |
| 8:01 | Jaylen Brown shooting foul | 15 | 6 |
| 8:01 | Maxi Kleber enters the game for Daniel Gafford | 15 | 6 |
| 8:01 | P.J. Washington makes free throw 1 of 1 | 16 | 6 |
| 7:48 | Jayson Tatum makes 7-foot two point shot | 16 | 8 |
| 7:36 | Kyrie Irving bad pass (Jayson Tatum steals) | 16 | 8 |
| 7:33 | Maxi Kleber blocks Jayson Tatum 's 1-foot two point shot | 16 | 8 |
| 7:30 | Mavericks defensive team rebound | 16 | 8 |
| 7:12 | P.J. Washington lost ball turnover (Jrue Holiday steals) | 16 | 8 |
| 7:03 | Jaylen Brown makes 19-foot pullup jump shot (Jrue Holiday assists) | 16 | 10 |
| 6:41 | Klay Thompson makes 26-foot three pointer (Maxi Kleber assists) | 19 | 10 |
| 6:28 | Kyrie Irving shooting foul | 19 | 10 |
| 6:28 | | 19 | 10 |
| 6:28 | (06:28) [Celtics] COACH'S CHALLENGE (CALL REPLAYCENTER) | 19 | 10 |
| 6:28 | Quentin Grimes enters the game for Spencer Dinwiddie | 19 | 10 |
| 6:28 | Al Horford enters the game for Jayson Tatum | 19 | 10 |
| 6:28 | Payton Pritchard enters the game for Derrick White | 19 | 10 |
| 6:28 | Jaylen Brown makes free throw 1 of 2 | 19 | 11 |
| 6:28 | Jaylen Brown misses free throw 2 of 2 | 19 | 11 |
| 6:26 | Klay Thompson defensive rebound | 19 | 11 |
| 6:12 | Maxi Kleber misses 26-foot three point jumper | 19 | 11 |
| 6:09 | Al Horford defensive rebound | 19 | 11 |
| 6:03 | Kristaps Porzingis makes 24-foot three point jumper (Jaylen Brown assists) | 19 | 14 |
| 5:51 | P.J. Washington misses 24-foot three point pullup jump shot | 19 | 14 |
| 5:48 | Jaylen Brown defensive rebound | 19 | 14 |
| 5:34 | Jaylen Brown makes 17-foot step back jumpshot | 19 | 16 |
| 5:12 | Kristaps Porzingis personal foul | 19 | 16 |
| 5:12 | Jaden Hardy enters the game for Klay Thompson | 19 | 16 |
| 5:02 | Kristaps Porzingis personal foul | 19 | 16 |
| 5:02 | Maxi Kleber makes free throw 1 of 2 | 20 | 16 |
| 5:02 | Maxi Kleber misses free throw 2 of 2 | 20 | 16 |
| 5:00 | Jaylen Brown defensive rebound | 20 | 16 |
| 4:47 | Jaylen Brown misses 24-foot three point jumper | 20 | 16 |
| 4:44 | Jrue Holiday offensive rebound | 20 | 16 |
| 4:41 | Jaden Hardy personal foul | 20 | 16 |
| 4:41 | Sam Hauser enters the game for Kristaps Porzingis | 20 | 16 |
| 4:41 | Daniel Gafford enters the game for Maxi Kleber | 20 | 16 |
| 4:28 | Jaylen Brown misses 6-foot two point shot | 20 | 16 |
| 4:26 | Kyrie Irving defensive rebound | 20 | 16 |
| 4:23 | Daniel Gafford makes two point shot (Jaden Hardy assists) | 22 | 16 |
| 4:11 | Jaylen Brown makes 7-foot two point shot (Payton Pritchard assists) | 22 | 18 |
| 4:11 | Quentin Grimes shooting foul | 22 | 18 |
| 4:11 | Kessler Edwards enters the game for P.J. Washington | 22 | 18 |
| 4:11 | Jaylen Brown misses free throw 1 of 1 | 22 | 18 |
| 4:09 | Kyrie Irving defensive rebound | 22 | 18 |
| 3:54 | Jaden Hardy makes 15-foot two point shot | 24 | 18 |
| 3:52 | | 24 | 18 |
| 3:52 | Luke Kornet enters the game for Jrue Holiday | 24 | 18 |
| 3:52 | Jayson Tatum enters the game for Jaylen Brown | 24 | 18 |
| 3:40 | Luke Kornet makes layup (Jayson Tatum assists) | 24 | 20 |
| 3:16 | Kyrie Irving misses driving floating jump shot | 24 | 20 |
| 3:14 | Luke Kornet defensive rebound | 24 | 20 |
| 2:57 | Al Horford makes 7-foot two point shot (Sam Hauser assists) | 24 | 22 |
| 2:32 | Jaden Hardy misses two point shot | 24 | 22 |
| 2:31 | Mavericks offensive team rebound | 24 | 22 |
| 2:31 | | 24 | 22 |
| 2:17 | Jayson Tatum makes 26-foot three pointer | 24 | 25 |
| 2:00 | Kyrie Irving makes 13-foot two point shot | 26 | 25 |
| 1:35 | Luke Kornet misses 10-foot two point shot | 26 | 25 |
| 1:32 | Kessler Edwards defensive rebound | 26 | 25 |
| 1:29 | Jayson Tatum personal foul | 26 | 25 |
| 1:29 | Jaden Hardy makes free throw 1 of 2 | 27 | 25 |
| 1:29 | P.J. Washington enters the game for Kessler Edwards | 27 | 25 |
| 1:29 | Jaden Hardy misses free throw 2 of 2 | 27 | 25 |
| 1:27 | Luke Kornet defensive rebound | 27 | 25 |
| 1:18 | Jayson Tatum misses 25-foot three point pullup jump shot | 27 | 25 |
| 1:16 | Mavericks defensive team rebound | 27 | 25 |
| 1:16 | Spencer Dinwiddie enters the game for Jaden Hardy | 27 | 25 |
| 1:16 | Jrue Holiday enters the game for Luke Kornet | 27 | 25 |
| 58.1 | Quentin Grimes misses two point shot | 27 | 25 |
| 56.0 | Al Horford defensive rebound | 27 | 25 |
| 47.1 | Mavericks Coach's Challenge | 27 | 25 |
| 47.1 | (00:47.5) [Mavericks] COACH'S CHALLENGE (CALL OVERTURNED) [Mavericks] retain their timeout | 27 | 25 |
| 47.1 | Al Horford vs. Daniel Gafford (Quentin Grimes gains possession) | 27 | 25 |
| 47.1 | Daniel Gafford blocks Jayson Tatum 's 2-foot driving dunk | 27 | 25 |
| 47.1 | Mavericks defensive team rebound | 27 | 25 |
| 34.1 | Spencer Dinwiddie misses 25-foot three point pullup jump shot | 27 | 25 |
| 31.0 | Jrue Holiday defensive rebound | 27 | 25 |
| 11.1 | Sam Hauser misses 28-foot three point jumper | 27 | 25 |
| 8.1 | Daniel Gafford defensive rebound | 27 | 25 |
| 2.1 | Daniel Gafford makes 3-foot layup (Quentin Grimes assists) | 29 | 25 |
| 0.1 | Payton Pritchard misses 49-foot three point jumper | 29 | 25 |
| 0.1 | Celtics offensive team rebound | 29 | 25 |
| 0.0 | End of the 1st Quarter | 29 | 25 |