Netflix’s NFL debut kicked off on Christmas Day without a glitch. Mariah Carey opened Wednesday’s doubleheader with a taped performance of “All I Want for Christmas is You” before Patrick Mahomes, Travis Kelce and the two-time defending Super Bowl champion Kansas City Chiefs faced off against Russell Wilson, T.J. Watt and the Pittsburgh Steelers.

The NFL will embark on a new Christmas Day tradition starting this year. Christmas Day games have been played in the past throughout the NFL, but only on special occasions.  That changes Wednesday, as the league will play Christmas Day games in the middle of the week for the first time.

The NFL has scheduled a pair of AFC showdowns for Christmas Day, both of which will be streaming exclusively on Netflix. In the first game the Kansas City Chiefs will try and lock down the top spot in the AFC when they travel east to take on the Pittsburgh Steelers.