New England Patriots quarterback Cam Newton tested positive for COVID-19 and won’t be available versus the Kansas City Chiefs in Week 4.

The NFL postponed the game that was originally slated for Sunday afternoon with plans to stage it Monday or Tuesday, and the league confirmed both teams produced a positive test. The league isn’t expected to determine a new date until it receives more test results from both clubs on Sunday.

Jordan Ta’amu, a practice-squad quarterback, was the Chiefs player who tested positive.

The Patriots were expected to fly to Kansas City around 1 p.m. Saturday, but their departure was delayed and players were sent home from the team facility as they awaited more test results.

The NFL was already forced to remove one game from the Week 4 schedule, rebooking the Tennessee Titans-Pittsburgh Steelers affair for Week 7 because of a COVID-19 outbreak on the Titans.

If the contest proceeds without him, Newton will be the first NFL starting quarterback to miss a game due to the coronavirus. New England is reportedly giving Brian Hoyer the start against the Chiefs over Jarrett Stidham.

Newton was off to a strong start through three weeks, leading the Patriots to a 2-1 record while totaling six touchdowns against two turnovers.