What did Wladimir Klitschko's seven-round bludgeoning of Hasim Rahman prove Saturday? Absolutely nothing. If Klitschko wants to take it to the next level, he'll have prove himself against dangerous, hungry opponents. Enter David Haye.
Nikolai Valuev clinched a heavyweight title by outpointing John Ruiz -- again -- but if the 7-foot Russian is to capture the imagination of fight fans, he'll have to do better than edge a has-been, writes Brian Doogan.