| Celtics | 21 | 42 | 24 | 17 | 0 | 104 | Final |
| Heat | 12 | 27 | 22 | 23 | 0 | 84 | Box |
| Celtics dominate Game 3 | |||||||
| Auto Refresh: Off | 15 | 30 | Refresh | |||||||
| Preview | Recap | Boxscore | MatchUp |
| Tot. | Shtng | Pct. | Other |
| Celtics | MI | FGPCT | TPPCT | FTPCT | FBPPG |
| Svi Mykhailiuk | 1.21 | 0.000 | 0.000 | 0.000 | 1 |
| Oshae Brissett | 1.21 | 0.000 | 0.000 | 0.000 | 1 |
| Luke Kornet | 5.2 | 0.000 | 1.000 | 0.000 | 3 |
| Sam Hauser | 19.58 | 0.330 | 0.000 | 0.200 | 1 |
| Al Horford | 22.14 | 0.570 | 0.000 | 0.250 | 13 |
| Payton Pritchard | 25.25 | 0.600 | 0.000 | 0.500 | 7 |
| Kristaps Porzingis | 27.25 | 0.560 | 0.830 | 0.600 | 23 |
| Derrick White | 30.53 | 0.500 | 0.000 | 0.290 | 17 |
| Jaylen Brown | 32.44 | 0.550 | 0.000 | 0.000 | 25 |
| Jrue Holiday | 34.31 | 0.200 | 0.000 | 0.330 | 8 |
| Jayson Tatum | 38.48 | 0.380 | 0.670 | 0.290 | 26 |
| Heat | MI | FGPCT | TPPCT | FTPCT | FBPPG |
| Orlando Robinson | 2.29 | 0.000 | 0.000 | 0.000 | 1 |
| Kevin Love | 3.44 | 0.000 | 0.000 | 0.000 | 2 |
| Thomas Bryant | 5.46 | 1.000 | 0.000 | 0.000 | 4 |
| Duncan Robinson | 7.23 | 0.000 | 0.000 | 0.000 | 1 |
| Patty Mills | 12 | 0.330 | 1.000 | 0.400 | 5 |
| Tyler Herro | 32.58 | 0.310 | 1.000 | 0.330 | 4 |
| Jaime Jaquez Jr. | 33.48 | 0.380 | 1.000 | 0.000 | 12 |
| Nikola Jovic | 33.53 | 0.450 | 0.670 | 0.600 | 19 |
| Caleb Martin | 37.4 | 0.500 | 0.000 | 0.500 | 6 |
| Bam Adebayo | 38.3 | 0.440 | 0.670 | 0.000 | 20 |
| Team Totals | MI | FGPCT | TPPCT | FTPCT | FBPPG |
| Celtics | 237.6 | 0.476 | 0.714 | 0.297 | 11.36 |
| Heat | 205.71 | 0.400 | 0.786 | 0.346 | 7.4 |
