| Boston Celtics Bench Rankings 2020-2021 | Stats Glossary  |
| Games with 41 or more Efficiency Recap | Boston Celtics Record : 19 - 16 |
| No | Date | Game | Score | Efficiency Recap |
| 1 | May 30 | vs Brooklyn | L | 126-141 | 46 |
| 2 | May 22 | at Brooklyn | L | 93-104 | 42 |
| 3 | May 16 | at New_York | L | 92-96 | 58 |
| 4 | May 15 | at Minnesota | W | 124-108 | 56 |
| 5 | May 5 | at Orlando | W | 132-96 | 56 |
| 6 | May 2 | vs Portland | L | 119-129 | 50 |
| 7 | Apr 30 | vs San_Antonio | W | 143-140 | 58 |
| 8 | Apr 28 | vs Charlotte | W | 120-111 | 43 |
| 9 | Apr 27 | vs Oklahoma_City | L | 115-119 | 57 |
| 10 | Apr 23 | at Brooklyn | L | 104-109 | 52 |
| 11 | Apr 4 | vs Charlotte | W | 116-86 | 49 |
| 12 | Mar 27 | at Oklahoma_City | W | 111-94 | 55 |
| 13 | Mar 24 | at Milwaukee | L | 119-121 | 44 |
| 14 | Mar 22 | at Memphis | L | 126-132 | 55 |
| 15 | Mar 17 | at Cleveland | L | 110-117 | 49 |
| 16 | Mar 14 | at Houston | W | 134-107 | 87 |
| 17 | Mar 11 | at Brooklyn | L | 109-121 | 45 |
| 18 | Mar 4 | vs Toronto | W | 132-125 | 70 |
| 19 | Mar 2 | vs L.A.Clippers | W | 117-112 | 54 |
| 20 | Feb 26 | vs Indiana | W | 118-112 | 54 |
| 21 | Feb 24 | at Atlanta | L | 112-127 | 67 |
| 22 | Feb 21 | at New_Orleans | L | 115-120 | 50 |
| 23 | Feb 16 | vs Denver | W | 112-99 | 49 |
| 24 | Feb 11 | vs Toronto | W | 120-106 | 45 |
| 25 | Feb 7 | at Phoenix | L | 91-100 | 43 |
| 26 | Feb 5 | at L.A.Clippers | W | 119-115 | 46 |
| 27 | Jan 27 | at San_Antonio | L | 106-110 | 41 |
| 28 | Jan 25 | at Chicago | W | 119-103 | 43 |
| 29 | Jan 24 | vs Cleveland | W | 141-103 | 66 |
| 30 | Jan 20 | at Philadelphia | L | 109-117 | 47 |
| 31 | Jan 15 | vs Orlando | W | 124-97 | 85 |
| 32 | Jan 4 | at Toronto | W | 126-114 | 79 |
| 33 | Dec 30 | vs Memphis | W | 126-107 | 59 |
| 34 | Dec 29 | at Indiana | W | 116-111 | 41 |
| 35 | Dec 27 | at Indiana | L | 107-108 | 49 |
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