As much as I like Tackie as a fighter and think he was likely better pound for pound than Kamau, I'm going with Kamau in a hard fought fight that is decided by the greater size of Kamau. Kamau only lost once at 140 and that was in a tough fight with Julio Cesear Chavez. After that he went to 147 and later 154. Tackle spent the majority of his career at 140 where he gave all of the top contenders there pure hell with his volume punching. Honestly, I wouldn't be surprised if Tackie outworked Kamau for a decision win. Tackie was tough as nails and was only stopped once in his career and that was in his very last fight when he was shot as a fighter.
Can’t see why Tackie doesn’t wear him down. The Chavez fight was in 1995. He would’ve been stopped if it were a younger Chavez.
