| Robert Williams III Rankings 2019-2020 | Stats Glossary  |
| Games with .600 or more Field-goals Percentage | Boston Celtics Record : 15 - 10 | Robert Williams III |
| No | Date | Game | Res | Score | Field-goals Percentage |
| 1 | Sep 27 | at Miami | L | 113-125 | 1.00 |
| 2 | Sep 15 | vs Miami | L | 114-117 | 1.00 |
| 3 | Sep 11 | at Toronto | W | 92-87 | 1.00 |
| 4 | Sep 9 | vs Toronto | L | 122-125 | 1.00 |
| 5 | Sep 5 | vs Toronto | L | 93-100 | .750 |
| 6 | Sep 1 | at Toronto | W | 102-99 | 1.00 |
| 7 | Aug 30 | at Toronto | W | 112-94 | 1.00 |
| 8 | Aug 13 | vs Washington | L | 90-96 | 1.00 |
| 9 | Aug 11 | at Memphis | W | 122-107 | .667 |
| 10 | Aug 9 | vs Orlando | W | 122-119 | .800 |
| 11 | Aug 7 | at Toronto | W | 122-100 | .800 |
| 12 | Aug 5 | vs Brooklyn | W | 149-115 | 1.00 |
| 13 | Mar 8 | vs Oklahoma_City | L | 104-105 | .667 |
| 14 | Mar 4 | at Cleveland | W | 112-106 | .600 |
| 15 | Mar 3 | vs Brooklyn | L | 120-129 | 1.00 |
| 16 | Nov 29 | at Brooklyn | L | 107-112 | .750 |
| 17 | Nov 25 | vs Sacramento | W | 103-102 | .600 |
| 18 | Nov 22 | at Denver | L | 92-96 | 1.00 |
| 19 | Nov 20 | at L.A.Clippers | L | 104-107 | 1.00 |
| 20 | Nov 11 | vs Dallas | W | 116-106 | .750 |
| 21 | Nov 9 | at San_Antonio | W | 135-115 | 1.00 |
| 22 | Nov 7 | at Charlotte | W | 108-87 | 1.00 |
| 23 | Nov 5 | at Cleveland | W | 119-113 | .750 |
| 24 | Oct 26 | at New_York | W | 118-95 | .667 |
| 25 | Oct 25 | vs Toronto | W | 112-106 | 1.00 |
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