2009–10 Boston Celtics season Game log December

| Game | Date_ | Team | Score | High_points | High_rebounds | High_assists | Location_Attendance | Record |
|---|---|---|---|---|---|---|---|---|
| 18 | December 1 | @ Charlotte | W 108–90 (OT) | Ray Allen (27) | Kendrick Perkins (12) | Rajon Rondo (9) | Time Warner Cable Arena 15,129 | 14–4 |
| 19 | December 3 | @ San Antonio | W 90–83 (OT) | Kevin Garnett (20) | Kevin Garnett, Kendrick Perkins (7) | Rajon Rondo (12) | AT&T Center 18,581 | 15–4 |
| 20 | December 4 | @ Oklahoma City | W 105–87 (OT) | Kevin Garnett (23) | Kevin Garnett, Kendrick Perkins (8) | Rajon Rondo (6) | Ford Center 18,203 | 16–4 |
| 21 | December 8 | Milwaukee | W 98–89 (OT) | Kevin Garnett (25) | Kevin Garnett, Rajon Rondo (9) | Rajon Rondo (13) | TD Garden 18,624 | 17–4 |