| Grant Williams Rankings 2021-2022 | Stats Glossary  |
| Games with 1 or more Offensive Rebounds | Boston Celtics Record : 32 - 22 | Grant Williams |
| No | Date | Game | Res | Score | Offensive Rebounds |
| 1 | Jun 8 | vs Golden_State | W | 116-100 | 3 |
| 2 | May 29 | at Miami | W | 100-96 | 3 |
| 3 | May 23 | vs Miami | W | 102-82 | 2 |
| 4 | May 21 | vs Miami | L | 103-109 | 1 |
| 5 | May 19 | at Miami | W | 127-102 | 1 |
| 6 | May 15 | vs Milwaukee | W | 109-81 | 1 |
| 7 | May 11 | vs Milwaukee | L | 107-110 | 1 |
| 8 | May 7 | at Milwaukee | L | 101-103 | 2 |
| 9 | May 3 | vs Milwaukee | W | 109-86 | 1 |
| 10 | May 1 | vs Milwaukee | L | 89-101 | 1 |
| 11 | Apr 23 | at Brooklyn | W | 109-103 | 3 |
| 12 | Apr 20 | vs Brooklyn | W | 114-107 | 4 |
| 13 | Apr 10 | at Memphis | W | 139-110 | 1 |
| 14 | Apr 7 | at Milwaukee | L | 121-127 | 1 |
| 15 | Apr 1 | vs Indiana | W | 128-123 | 1 |
| 16 | Mar 30 | vs Miami | L | 98-106 | 2 |
| 17 | Mar 28 | at Toronto | L | 112-115 | 1 |
| 18 | Mar 21 | at Oklahoma_City | W | 132-123 | 2 |
| 19 | Mar 20 | at Denver | W | 124-104 | 3 |
| 20 | Mar 16 | at Golden_State | W | 110-88 | 1 |
| 21 | Mar 13 | vs Dallas | L | 92-95 | 1 |
| 22 | Mar 11 | vs Detroit | W | 114-103 | 1 |
| 23 | Mar 9 | at Charlotte | W | 115-101 | 3 |
| 24 | Mar 6 | vs Brooklyn | W | 126-120 | 1 |
| 25 | Mar 3 | vs Memphis | W | 120-107 | 1 |
| 26 | Mar 1 | vs Atlanta | W | 107-98 | 2 |
| 27 | Feb 27 | at Indiana | L | 107-128 | 1 |
| 28 | Feb 15 | at Philadelphia | W | 135-87 | 1 |
| 29 | Feb 11 | vs Denver | W | 108-102 | 1 |
| 30 | Feb 6 | at Orlando | W | 116-83 | 1 |
| 31 | Feb 2 | vs Charlotte | W | 113-107 | 1 |
| 32 | Jan 31 | vs Miami | W | 122-92 | 2 |
| 33 | Jan 29 | at New_Orleans | W | 107-97 | 1 |
| 34 | Jan 28 | at Atlanta | L | 92-108 | 2 |
| 35 | Jan 25 | vs Sacramento | W | 128-75 | 2 |
| 36 | Jan 23 | at Washington | W | 116-87 | 1 |
| 37 | Jan 21 | vs Portland | L | 105-109 | 1 |
| 38 | Jan 19 | vs Charlotte | L | 102-111 | 1 |
| 39 | Jan 8 | vs New_York | W | 99-75 | 2 |
| 40 | Jan 2 | vs Orlando | W | 116-111 | 3 |
| 41 | Dec 31 | vs Phoenix | W | 123-108 | 1 |
| 42 | Dec 29 | vs L.A.Clippers | L | 82-91 | 4 |
| 43 | Dec 27 | at Minnesota | L | 103-108 | 2 |
| 44 | Dec 8 | at L.A.Clippers | L | 111-114 | 1 |
| 45 | Dec 4 | at Portland | W | 145-117 | 1 |
| 46 | Nov 26 | at San_Antonio | L | 88-96 | 2 |
| 47 | Nov 24 | vs Brooklyn | L | 104-123 | 1 |
| 48 | Nov 19 | vs L.A.Lakers | W | 130-108 | 1 |
| 49 | Nov 17 | at Atlanta | L | 99-110 | 2 |
| 50 | Nov 13 | at Cleveland | L | 89-91 | 1 |
| 51 | Nov 6 | at Dallas | L | 104-107 | 1 |
| 52 | Nov 1 | vs Chicago | L | 114-128 | 3 |
| 53 | Oct 30 | at Washington | L | 112-115 | 2 |
| 54 | Oct 24 | at Houston | W | 107-97 | 1 |
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