Pritchard will start Monday's game against Minnesota, Jay King of The Athletic reports.
With Marcus Smart (hand) ruled out, and several other Celtics in COVID-19 protocols, Boston will turn to Pritchard as the fill-in starting point guard. This will be the first start of the season for the second-year guard, who finished Saturday's win over Milwaukee with 16 points, five rebounds, five assists, one steal and one block in 30 minutes off the bench.