| Robert Williams III Tips 2021-2022 | Stats Glossary  |
| Games with 13 or more Rebounds | Boston Celtics Record : 9 - 4 | Robert Williams III |
| No | Date | Game | Res | Score | Rebounds |
| 1 | Mar 1 | vs Atlanta | W | 107-98 | 13 |
| 2 | Feb 13 | vs Atlanta | W | 105-95 | 14 |
| 3 | Feb 11 | vs Denver | W | 108-102 | 16 |
| 4 | Jan 29 | at New_Orleans | W | 107-97 | 16 |
| 5 | Jan 25 | vs Sacramento | W | 128-75 | 17 |
| 6 | Jan 15 | vs Chicago | W | 114-112 | 13 |
| 7 | Jan 14 | at Philadelphia | L | 99-111 | 14 |
| 8 | Dec 29 | vs L.A.Clippers | L | 82-91 | 14 |
| 9 | Dec 25 | at Milwaukee | L | 113-117 | 14 |
| 10 | Nov 22 | vs Houston | W | 108-90 | 15 |
| 11 | Nov 13 | at Cleveland | L | 89-91 | 16 |
| 12 | Nov 10 | vs Toronto | W | 104-88 | 13 |
| 13 | Oct 25 | at Charlotte | W | 140-129 | 16 |
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