If the New York Giants beat the Miami Dolphins tonight (8:30 PM ET on ESPN), the Giants at Minnesota Vikings game on December 27 will move to NBC Sunday Night Football at 7:30 PM CT. The Indianapolis Colts-Miami game will remain at Noon CT but cross flex from CBS to FOX.
If the Giants lose or tie tonight, the Pittsburgh Steelers at Baltimore Ravens will be the Sunday Night Football game. The Giants-Vikings game would remain at Noon CT on FOX. The Colts-Dolphins game would remain at Noon CT on CBS.