| Grant Williams Rankings 2021-2022 | Stats Glossary  |
| Games with 3 or more Defensive Rebounds | Boston Celtics Record : 34 - 16 | Grant Williams |
| No | Date | Game | Res | Score | Defensive Rebounds |
| 1 | Jun 13 | at Golden_State | L | 94-104 | 3 |
| 2 | Jun 2 | at Golden_State | W | 120-108 | 3 |
| 3 | May 29 | at Miami | W | 100-96 | 3 |
| 4 | May 25 | at Miami | W | 93-80 | 6 |
| 5 | May 23 | vs Miami | W | 102-82 | 3 |
| 6 | May 21 | vs Miami | L | 103-109 | 4 |
| 7 | May 19 | at Miami | W | 127-102 | 3 |
| 8 | May 15 | vs Milwaukee | W | 109-81 | 5 |
| 9 | May 13 | at Milwaukee | W | 108-95 | 5 |
| 10 | May 9 | at Milwaukee | W | 116-108 | 4 |
| 11 | May 7 | at Milwaukee | L | 101-103 | 4 |
| 12 | May 3 | vs Milwaukee | W | 109-86 | 4 |
| 13 | May 1 | vs Milwaukee | L | 89-101 | 3 |
| 14 | Apr 25 | at Brooklyn | W | 116-112 | 3 |
| 15 | Apr 7 | at Milwaukee | L | 121-127 | 7 |
| 16 | Apr 3 | vs Washington | W | 144-102 | 3 |
| 17 | Apr 1 | vs Indiana | W | 128-123 | 4 |
| 18 | Mar 28 | at Toronto | L | 112-115 | 6 |
| 19 | Mar 27 | vs Minnesota | W | 134-112 | 3 |
| 20 | Mar 21 | at Oklahoma_City | W | 132-123 | 8 |
| 21 | Mar 20 | at Denver | W | 124-104 | 3 |
| 22 | Mar 18 | at Sacramento | W | 126-97 | 3 |
| 23 | Mar 16 | at Golden_State | W | 110-88 | 4 |
| 24 | Mar 13 | vs Dallas | L | 92-95 | 3 |
| 25 | Mar 9 | at Charlotte | W | 115-101 | 5 |
| 26 | Mar 3 | vs Memphis | W | 120-107 | 3 |
| 27 | Mar 1 | vs Atlanta | W | 107-98 | 5 |
| 28 | Feb 26 | at Detroit | W | 113-104 | 4 |
| 29 | Feb 24 | at Brooklyn | W | 129-106 | 3 |
| 30 | Feb 16 | vs Detroit | L | 111-112 | 3 |
| 31 | Feb 13 | vs Atlanta | W | 105-95 | 4 |
| 32 | Jan 29 | at New_Orleans | W | 107-97 | 5 |
| 33 | Jan 23 | at Washington | W | 116-87 | 6 |
| 34 | Jan 21 | vs Portland | L | 105-109 | 7 |
| 35 | Jan 2 | vs Orlando | W | 116-111 | 3 |
| 36 | Dec 31 | vs Phoenix | W | 123-108 | 3 |
| 37 | Dec 27 | at Minnesota | L | 103-108 | 4 |
| 38 | Dec 13 | vs Milwaukee | W | 117-103 | 7 |
| 39 | Dec 10 | at Phoenix | L | 90-111 | 3 |
| 40 | Dec 4 | at Portland | W | 145-117 | 3 |
| 41 | Nov 28 | at Toronto | W | 109-97 | 5 |
| 42 | Nov 26 | at San_Antonio | L | 88-96 | 3 |
| 43 | Nov 24 | vs Brooklyn | L | 104-123 | 3 |
| 44 | Nov 22 | vs Houston | W | 108-90 | 5 |
| 45 | Nov 20 | vs Oklahoma_City | W | 111-105 | 8 |
| 46 | Nov 17 | at Atlanta | L | 99-110 | 4 |
| 47 | Nov 15 | at Cleveland | W | 98-92 | 4 |
| 48 | Nov 13 | at Cleveland | L | 89-91 | 4 |
| 49 | Nov 10 | vs Toronto | W | 104-88 | 3 |
| 50 | Oct 20 | at New_York | L | 134-138 | 5 |
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