By Rick Reeno

Tonight is the night when boxing fans will witness if undefeated Calvin Brock (29-0, 22KOs) is ready for the big stage. A big underdog among boxing experts, Brock wants to test the chin of Klitschko early and gain the IBF heavyweight champion's respect from the start.

New York's Madison Square Garden will play host to Wladimir Klitschko's (46-3, 41 KOs)first defense of the IBF title he won from Chris Byrd. Over the last two years, Klitschko has been able to rebuild his career with the help of trainer Emanuel Steward.

A unanimous decision win over then undefeated Samuel Peter and a knockout of Chris Byrd has raised his stock among critics who called him a shot fighter with no heart.

Brock has only been down once as a pro, against Jameel McCline in 2005. He was caught cold by McCline, but got off the mat to win the round by battering a charging McCline for the remainder of the time period.

Whether or not Brock will be able to overcome the size and strength advantage of Klitschko is a mystery. Brock has never faced a fighter on the level of Klitschko and this is a big step up in class. Many have said that Brock is not ready for Klitschko, but at 31-years-old - it's now or never. 

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