Several teams have been hit hard due to COVID-19 running rampant around the NFL.
Because of this, thee games had to be re-scheduled in Week 15.
From the schedule update:
The game between the Las Vegas Raiders at the Cleveland Browns will now be played at 5pm EST on Monday night. The already scheduled Monday Night Football game between the Minnesota Vikings and Chicago Bears will go on at its normal time of 8:15pm EST.
On Tuesday, December 21, two games will take place simultaneously at 7pm EST. The Seattle Seahawks will take on the Los Angeles Rams at SoFi Stadium and the Washington Football Team will go to Lincoln Financial Field to face the Philadelphia Eagles.