| Marcus Smart Rankings 2019-2020 | Stats Glossary  |
| Games with .318 or more 3-point Percentage | Boston Celtics Record : 29 - 12 | Marcus Smart |
| No | Date | Game | Res | Score | 3-point Percentage |
| 1 | Sep 25 | vs Miami | W | 121-108 | .400 |
| 2 | Sep 17 | vs Miami | L | 101-106 | .333 |
| 3 | Sep 15 | vs Miami | L | 114-117 | .462 |
| 4 | Sep 9 | vs Toronto | L | 122-125 | .545 |
| 5 | Sep 7 | at Toronto | W | 111-89 | .400 |
| 6 | Sep 1 | at Toronto | W | 102-99 | .545 |
| 7 | Aug 30 | at Toronto | W | 112-94 | .556 |
| 8 | Aug 23 | at Philadelphia | W | 110-106 | .500 |
| 9 | Aug 11 | at Memphis | W | 122-107 | .500 |
| 10 | Aug 9 | vs Orlando | W | 122-119 | .400 |
| 11 | Aug 5 | vs Brooklyn | W | 149-115 | .667 |
| 12 | Jul 31 | at Milwaukee | L | 112-119 | .500 |
| 13 | Mar 10 | at Indiana | W | 114-111 | .333 |
| 14 | Mar 6 | vs Utah | L | 94-99 | .400 |
| 15 | Feb 29 | vs Houston | L | 110-111 | .333 |
| 16 | Feb 26 | at Utah | W | 114-103 | .375 |
| 17 | Feb 25 | at Portland | W | 118-106 | .444 |
| 18 | Feb 23 | at L.A.Lakers | L | 112-114 | .429 |
| 19 | Feb 13 | vs L.A.Clippers | W | 141-133 | .357 |
| 20 | Feb 11 | at Houston | L | 105-116 | .500 |
| 21 | Feb 9 | at Oklahoma_City | W | 112-111 | .333 |
| 22 | Feb 1 | vs Philadelphia | W | 116-95 | .500 |
| 23 | Jan 30 | vs Golden_State | W | 119-104 | .500 |
| 24 | Jan 28 | at Miami | W | 109-101 | .375 |
| 25 | Jan 22 | vs Memphis | W | 119-95 | .333 |
| 26 | Jan 18 | vs Phoenix | L | 119-123 | .500 |
| 27 | Jan 16 | at Milwaukee | L | 123-128 | .500 |
| 28 | Jan 13 | vs Chicago | W | 113-101 | .400 |
| 29 | Jan 9 | at Philadelphia | L | 98-109 | .714 |
| 30 | Jan 3 | vs Atlanta | W | 109-106 | .400 |
| 31 | Dec 6 | vs Denver | W | 108-95 | 1.00 |
| 32 | Nov 27 | vs Brooklyn | W | 121-110 | .400 |
| 33 | Nov 22 | at Denver | L | 92-96 | .500 |
| 34 | Nov 15 | at Golden_State | W | 105-100 | .556 |
| 35 | Nov 13 | vs Washington | W | 140-133 | .500 |
| 36 | Nov 11 | vs Dallas | W | 116-106 | .571 |
| 37 | Nov 9 | at San_Antonio | W | 135-115 | .444 |
| 38 | Nov 5 | at Cleveland | W | 119-113 | .333 |
| 39 | Nov 1 | vs New_York | W | 104-102 | .333 |
| 40 | Oct 30 | vs Milwaukee | W | 116-105 | .455 |
| 41 | Oct 26 | at New_York | W | 118-95 | .375 |
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