Much of the sporting world and most of America will be keeping a close eye on the Super Bowl on Sunday, but more than a few NFL legends may spend the earlier hours of the day taking in Liverpool's clash with Tottenham or Barcelona's derby match against Espanyol.
There is a great deal of respect for the footballing world in the NFL, even if those involved do call it soccer.
“There is really no other game like it,” former NFL quarterback and coach Jim Harbaugh told The Wall Street Journal after his Michigan Wolverines practiced with the Italian Serie A club AS Roma back in August. “I always encourage youngsters in America to play soccer.”
And Harbaugh is not alone.
Numerous current and former NFL stars got their athletic starts on a football pitch, while others fell in love with the sport as spectators later in life.
Here's a look at the top 10 NFLers who have a confirmed affinity for the football that isn't played with primarily with hands.