| Grant Williams Rankings 2022-2023 | Stats Glossary  |
| Games with .370 or more Free-throws Percentage | Boston Celtics Record : 27 - 14 | Grant Williams |
| No | Date | Game | Res | Score | Free-throws Percentage |
| 1 | May 27 | at Miami | W | 104-103 | .500 |
| 2 | May 25 | vs Miami | W | 110-97 | .750 |
| 3 | May 23 | at Miami | W | 116-99 | 1.00 |
| 4 | Apr 21 | at Atlanta | L | 122-130 | 1.00 |
| 5 | Apr 7 | vs Toronto | W | 121-102 | .750 |
| 6 | Mar 30 | at Milwaukee | W | 140-99 | .500 |
| 7 | Mar 28 | at Washington | L | 111-130 | .800 |
| 8 | Mar 5 | vs New_York | L | 129-131 | 1.00 |
| 9 | Mar 3 | vs Brooklyn | L | 105-115 | .500 |
| 10 | Feb 27 | at New_York | L | 94-109 | 1.00 |
| 11 | Feb 25 | at Philadelphia | W | 110-107 | .500 |
| 12 | Feb 14 | at Milwaukee | L | 125-131 | .667 |
| 13 | Feb 12 | vs Memphis | W | 119-109 | .750 |
| 14 | Feb 10 | vs Charlotte | W | 127-116 | 1.00 |
| 15 | Feb 8 | vs Philadelphia | W | 106-99 | .500 |
| 16 | Jan 28 | vs L.A.Lakers | W | 125-121 | .500 |
| 17 | Jan 24 | at Miami | L | 95-98 | .500 |
| 18 | Jan 23 | at Orlando | L | 98-113 | 1.00 |
| 19 | Jan 21 | at Toronto | W | 106-104 | .875 |
| 20 | Jan 16 | at Charlotte | W | 130-118 | 1.00 |
| 21 | Jan 12 | at Brooklyn | W | 109-98 | 1.00 |
| 22 | Jan 11 | vs New_Orleans | W | 125-114 | 1.00 |
| 23 | Jan 9 | vs Chicago | W | 107-99 | .500 |
| 24 | Jan 7 | at San_Antonio | W | 121-116 | 1.00 |
| 25 | Jan 5 | at Dallas | W | 124-95 | 1.00 |
| 26 | Jan 1 | at Denver | L | 111-123 | 1.00 |
| 27 | Dec 27 | vs Houston | W | 126-102 | 1.00 |
| 28 | Dec 25 | vs Milwaukee | W | 139-118 | 1.00 |
| 29 | Dec 18 | vs Orlando | L | 92-95 | .714 |
| 30 | Dec 16 | vs Orlando | L | 109-117 | 1.00 |
| 31 | Dec 12 | at L.A.Clippers | L | 93-113 | .714 |
| 32 | Dec 2 | vs Miami | L | 116-120 | 1.00 |
| 33 | Nov 25 | vs Sacramento | W | 122-104 | 1.00 |
| 34 | Nov 16 | at Atlanta | W | 126-101 | 1.00 |
| 35 | Nov 14 | vs Oklahoma_City | W | 126-122 | 1.00 |
| 36 | Nov 12 | at Detroit | W | 117-108 | 1.00 |
| 37 | Nov 7 | at Memphis | W | 109-106 | 1.00 |
| 38 | Nov 5 | at New_York | W | 133-118 | 1.00 |
| 39 | Nov 2 | at Cleveland | L | 113-114 | .750 |
| 40 | Oct 22 | at Orlando | W | 126-120 | 1.00 |
| 41 | Oct 18 | vs Philadelphia | W | 126-117 | .667 |
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