Boxingtalk's staff predictions are in for this weekend's heavyweight clash as IBF/IBO heavyweight champion Wladimir Klitschko defends his title against challenger Calvin Brock. Will Brock be the second American to capture a heavyweight title? Will Klitschko reassert the Eastern-European dominance in the heavyweight division? Get the answers to these questions and more in Boxingtalk's staff predictions. Check it out!

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