Anthony Tolliver started in place of McRoberts, who scored a season-high 19 points in a loss at Atlanta on Monday.
The 6-foot-10 McRoberts is averaging 9.0 points, 4.1 rebounds and 4.1 assists.
Tolliver is shooting just 33 percent from the field, but 42 percent from 3-point range in five games.
The team expects McRoberts back on Friday when it plays at Cleveland.
- Sports & Recreation
- Josh McRoberts
- Anthony Tolliver
- Boston Celtics