Kambosos has beaten Haneys trainer (Mickey Bey) 2 fights previously, this is a big feather in the cap for this fight because Mickey and Haney have similarities in style, particularly jab and back foot defence.
I think this comparison are no longer valid since Bey's prime has passed when he fight against Kambosos, he was an active boxer on 2007-2014... after he lose from Kambosos, he never fought anyone anymore.
True that, but the author of the link I shared stresses the boxing style Mickey Bey might pass on Haney since Mickey Bey is currently Haney's trainer. There might be some variation but obviously, the possibility of Bey's basic style to be seen on Haney is there, and that is where Kambosos get familiar with when he fights Bey.
The interesting thing is Haney get exposed when he fought with Linares on a year ago, Linares throw quick combination of right and left punch to Haney on 10th rounds, Haney almost fell but he can still walk to the corners.
This could be an advantages to Kambosos as we know he's quick puncher, Haney wouldn't survived if Kambosos can throw a quick clean punches. However Haney has a good surprise punch, his left hook was insane.
It is really dangerous when the fighter's previous fight exposes him. It simply gives his opponent a flaw that can be exploited. I hope Haney had made arrangements to at least nullify this weakness that was exposed during his previous fights.