| Grant Williams Rankings 2021-2022 | Stats Glossary  |
| Games with 10 or more Efficiency Recap | Boston Celtics Record : 32 - 11 | Grant Williams |
| No | Date | Game | Res | Score | Efficiency Recap |
| 1 | Jun 8 | vs Golden_State | W | 116-100 | 11 |
| 2 | May 29 | at Miami | W | 100-96 | 11 |
| 3 | May 21 | vs Miami | L | 103-109 | 12 |
| 4 | May 19 | at Miami | W | 127-102 | 21 |
| 5 | May 15 | vs Milwaukee | W | 109-81 | 22 |
| 6 | May 7 | at Milwaukee | L | 101-103 | 12 |
| 7 | May 3 | vs Milwaukee | W | 109-86 | 20 |
| 8 | Apr 25 | at Brooklyn | W | 116-112 | 17 |
| 9 | Apr 20 | vs Brooklyn | W | 114-107 | 25 |
| 10 | Apr 7 | at Milwaukee | L | 121-127 | 11 |
| 11 | Apr 3 | vs Washington | W | 144-102 | 18 |
| 12 | Mar 28 | at Toronto | L | 112-115 | 15 |
| 13 | Mar 21 | at Oklahoma_City | W | 132-123 | 24 |
| 14 | Mar 20 | at Denver | W | 124-104 | 18 |
| 15 | Mar 16 | at Golden_State | W | 110-88 | 10 |
| 16 | Mar 9 | at Charlotte | W | 115-101 | 11 |
| 17 | Mar 3 | vs Memphis | W | 120-107 | 14 |
| 18 | Mar 1 | vs Atlanta | W | 107-98 | 22 |
| 19 | Feb 26 | at Detroit | W | 113-104 | 19 |
| 20 | Feb 24 | at Brooklyn | W | 129-106 | 10 |
| 21 | Feb 16 | vs Detroit | L | 111-112 | 19 |
| 22 | Feb 15 | at Philadelphia | W | 135-87 | 15 |
| 23 | Feb 6 | at Orlando | W | 116-83 | 15 |
| 24 | Feb 2 | vs Charlotte | W | 113-107 | 14 |
| 25 | Jan 31 | vs Miami | W | 122-92 | 13 |
| 26 | Jan 25 | vs Sacramento | W | 128-75 | 11 |
| 27 | Jan 23 | at Washington | W | 116-87 | 16 |
| 28 | Jan 21 | vs Portland | L | 105-109 | 19 |
| 29 | Jan 17 | vs New_Orleans | W | 104-92 | 10 |
| 30 | Dec 31 | vs Phoenix | W | 123-108 | 17 |
| 31 | Dec 27 | at Minnesota | L | 103-108 | 17 |
| 32 | Dec 13 | vs Milwaukee | W | 117-103 | 22 |
| 33 | Dec 4 | at Portland | W | 145-117 | 13 |
| 34 | Nov 28 | at Toronto | W | 109-97 | 18 |
| 35 | Nov 26 | at San_Antonio | L | 88-96 | 15 |
| 36 | Nov 22 | vs Houston | W | 108-90 | 11 |
| 37 | Nov 20 | vs Oklahoma_City | W | 111-105 | 22 |
| 38 | Nov 17 | at Atlanta | L | 99-110 | 18 |
| 39 | Nov 15 | at Cleveland | W | 98-92 | 14 |
| 40 | Nov 13 | at Cleveland | L | 89-91 | 13 |
| 41 | Oct 25 | at Charlotte | W | 140-129 | 11 |
| 42 | Oct 24 | at Houston | W | 107-97 | 20 |
| 43 | Oct 20 | at New_York | L | 134-138 | 21 |
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