Rob Ruck, author of "Tropic of Football: The Long and Perilous Journey of Samoans to the NFL," joins The Professor to give a complete history lesson on Samoans in the National Football League.

It’s a fascinating subject because it involves some of the NFL greats: Junior Seau, Jesse Sapolu, Troy Polamolu and so many others. (For those who follow Washington Huskies football, they know the impact of great Samoan players.)

Ruck digs back in the history of how football started on the islands and goes through all the big names and top stories. He takes us through the tough conditions the players have on the field, but how the dedication and love of the game has made these players special.

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