| month | day | visitor | score | home | score |
|---|
| November | 4, 2090 | Celtics | 67 | Grizzlies | 92 |
| November | 8, 2090 | Nuggets | 85 | Celtics | 76 |
| November | 9, 2090 | SuperSonics | 107 | Celtics | 82 |
| November | 10, 2090 | Celtics | 77 | Rockets | 87 |
| November | 12, 2090 | Celtics | 58 | SuperSonics | 98 |
| November | 13, 2090 | Pistons | 95 | Celtics | 88 |
| November | 14, 2090 | Celtics | 71 | Lions | 95 |
| November | 16, 2090 | Celtics | 100 | Pacers | 112 |
| November | 17, 2090 | Blazers | 106 | Celtics | 78 |
| November | 19, 2090 | Celtics | 74 | Clippers | 121 |
| December | 3, 2090 | Heat | 76 | Celtics | 73 |
| December | 4, 2090 | Celtics | 93 | Suns | 108 |
| December | 5, 2090 | Celtics | 76 | 76ers | 105 |
| December | 8, 2090 | Grizzlies | 106 | Celtics | 88 |
| December | 10, 2090 | Celtics | 100 | Timberwolves | 95 |
| December | 12, 2090 | Celtics | 65 | Spurs | 104 |
| December | 15, 2090 | 76ers | 78 | Celtics | 70 |
| December | 16, 2090 | Lions | 101 | Celtics | 96 |
| December | 20, 2090 | Celtics | 95 | Rockets | 105 |
| December | 21, 2090 | Celtics | 77 | Kings | 97 |
| December | 22, 2090 | Raptors | 97 | Celtics | 88 |
| December | 23, 2090 | Rockets | 79 | Celtics | 89 |
| December | 27, 2090 | Clippers | 110 | Celtics | 91 |
| December | 30, 2090 | Nets | 96 | Celtics | 98 |
| December | 31, 2090 | Pacers | 76 | Celtics | 100 |
| January | 1, 2091 | Pacers | 89 | Celtics | 98 |
| January | 4, 2091 | Celtics | 89 | Cavaliers | 109 |
| January | 5, 2091 | Celtics | 96 | Pistons | 111 |
| January | 6, 2091 | Celtics | 80 | Nets | 93 |
| January | 7, 2091 | Celtics | 98 | Lakers | 94 |
| January | 8, 2091 | Knicks | 81 | Celtics | 100 |
| January | 10, 2091 | Celtics | | Bucks | |
| January | 11, 2091 | Warriors | | Celtics | |
| January | 14, 2091 | Celtics | | Cavaliers | |
| January | 15, 2091 | Celtics | | Hornets | |
| January | 19, 2091 | Celtics | | Hawks | |
| January | 21, 2091 | Celtics | | Blazers | |
| January | 22, 2091 | Kings | | Celtics | |
| January | 24, 2091 | 76ers | | Celtics | |
| January | 25, 2091 | Bucks | | Celtics | |
| January | 26, 2091 | Celtics | | Raptors | |
| January | 27, 2091 | Thunder | | Celtics | |
| January | 28, 2091 | Celtics | | Warriors | |
| January | 29, 2091 | Celtics | | Bucks | |
| January | 30, 2091 | Hawks | | Celtics | |
| January | 31, 2091 | Celtics | | Heat | |
| February | 7, 2091 | Bulls | | Celtics | |
| February | 9, 2091 | Celtics | | Raptors | |
| February | 11, 2091 | Celtics | | Nuggets | |
| February | 12, 2091 | Hornets | | Celtics | |
| February | 13, 2091 | Celtics | | Bulls | |
| February | 15, 2091 | Cavaliers | | Celtics | |
| February | 16, 2091 | Bucks | | Celtics | |
| February | 21, 2091 | Spurs | | Celtics | |
| February | 22, 2091 | Celtics | | Grizzlies | |
| February | 23, 2091 | Pacers | | Celtics | |
| February | 24, 2091 | Lions | | Celtics | |
| February | 25, 2091 | Nuggets | | Celtics | |
| February | 26, 2091 | Hornets | | Celtics | |
| February | 28, 2091 | Jazz | | Celtics | |
| March | 1, 2091 | Suns | | Celtics | |
| March | 2, 2091 | Grizzlies | | Celtics | |
| March | 4, 2091 | Celtics | | Lions | |
| March | 7, 2091 | Celtics | | Jazz | |
| March | 10, 2091 | Celtics | | Knicks | |
| March | 12, 2091 | Celtics | | Spurs | |
| March | 13, 2091 | Celtics | | Thunder | |
| March | 15, 2091 | Lakers | | Celtics | |
| March | 16, 2091 | Celtics | | Cavaliers | |
| March | 17, 2091 | Celtics | | Lakers | |
| March | 18, 2091 | Lions | | Celtics | |
| March | 23, 2091 | Bulls | | Celtics | |
| March | 28, 2091 | Lakers | | Celtics | |
| April | 2, 2091 | Celtics | | 76ers | |
| April | 6, 2091 | Celtics | | Nuggets | |
| April | 9, 2091 | Celtics | | Hornets | |
| April | 10, 2091 | Celtics | | Bulls | |
| April | 11, 2091 | Timberwolves | | Celtics | |
| April | 14, 2091 | Spurs | | Celtics | |
| April | 15, 2091 | Raptors | | Celtics | |
| April | 17, 2091 | Celtics | | Pacers | |
| April | 20, 2091 | Rockets | | Celtics | |