Lennox Lewis.. that right cross that detonated on Mike weavers chin was a prime example.. Frank Bruno is another one.. Very underrated..
I don't remember Bruno throwing many straight rights, although his overhand right was awesome. Lewis is a very good call: he tended to throw overhand rights as well, but his straight right hand was always devastatingly effective when he threw it. "He broke his legs!"
Pavliks is great, usually he has to throw it 2 or 3 times. Everytime Wlad drops it, great chance of a KO
too many variations to come up with a clear answer. lead straight right hands- tszyu, mayweather, hopkins