When did the nfl start playing
- when did the nfl start playing on thursday
- when did the nfl start playing games in other countries
- when did the nfl start playing thursday night football
- when did the nfl start playing in europe
- when did the nfl start playing on thanksgiving
- when did the nfl start playing thursday night games
- when did the nfl start playing on thursday nights
- when did the nfl start playing games in london
- when did the nfl start playing in london
- when did the nfl start playing on christmas day
