Brown tested positive for COVID-19 three weeks ago, and unfortunately, there's really no telling when he might be back to 100 percent.
The pair combined for 71 points—41 for Jason Tatum and 30 for Jaylen Brown—to lead the double digit comeback effort.
Celtics guard Marcus Smart was suspended for Friday's preseason game against the Miami Heat, because he missed the team flight.
Celtics big man Al Horford tested positive for COVID-19 on Tuesday days after Jaylen Brown was also tested positive.
Due to a positive test, Brown will have to quarantine for at least 10 days, which means he's done for the remainder of the preseason.
Marcus Smart, the No. 6 overall pick in the 2014 draft, has become a vital part of this Celtic group thanks to his work on the defensive end.