NFL: National Football League Discussion

1. This uses the name the player goes by, as listed here: https://www.pro-football-reference.com/players/

2. This only considers players with exactly one first name and exactly one last name. If you're Bobby Joe Conrad or Kyle Van Noy, you don't get to participate.

3. No reusing names. This prevents circles, like Jordan Cameron -> Cameron Jordan -> Jordan Cameron = infinity.

4. There are other chains of equal length. For simplicity, I'm just including one. They're all extremely similar anyway.

5. It's possible that my code has a bug in it and it didn't actually find the longest possible chain. You can call this the longest known chain, if you wish.

Anyway, here's the name chain:

1. Tony Leon

2. Leon Joe

3. Joe Jacoby