Can you link from any two modern day(last 60yrs) boxers simply through fights and trainers. How about Rocky Marciano and David Haye?
1) David Haye beat... 2) John Ruiz who had previously lost to... 3) ...Sugar Nikolai Valuev who got a decision against... 4) Evander Holyfield who was at one point trained by... 5) ...Lou Duva, who was friends with... 6) Rocky Marciano!
Haye beat Valuev, who beat Holyfield, who beat Holmes, who beat Ali, who beat Moore, who lost to Marciano. Seven degrees. :yep