There is little to choose between knockout king Sergey Kovalev and Andre Ward, the smart slickster. So how does either man win?
Well, we have a tactics special to help you make up your mind ahead of the light-heavyweight unification showdown, live on Sky Sports 1 in the early hours of Sunday morning.
Kovalev is strong and crude, Ward is known for nullifying his opponent.
Most are expecting 'Krusher' to retain his IBF, WBA 'super' and WBO world titles if the Las Vegas scrap finishes early, or 'S.O.G' to take it on points.
But there is more to the fight than that, so Ed Robinson and Spencer Fearon explain the strengths and threats that both will bring to the ring.
To watch the tactical breakdown all you have to do is press play at the top of this article.