Of these 3? '86-'88 Tyson. All time? P4P... Marciano, Ketchel and Jackson had more lethal overhand rights than any of them.
Lewis, Tyson and Bowe didn't really have great overhand rights. Bowe's we looping and Mikes was thrown on the inside more.
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Lewis pretty easily, part of being lethal is having the ability to land it, Lewis had the ability to land it at any time without setting it up, Tyson had to work hard to land his right. Bowe's just wasn't nearly as good