Giannis Antetokounmpo has entered the NBA's COVID-19 health and safety protocols. 

Antetokounmpo went into the protocols a day after scoring 20 points in 34 minutes in a 117-103 loss to the Celtics in Boston.

Wesley Matthews has previously been in the protocols for the past two games. 

Tuesday's news now leaves Antetokounmpo's status for Milwaukee's rematch with Boston on Christmas Day in doubt.