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For long-suffering fans of the American heavyweight boxing scene, Wilder is the latest great hope. He just might be the most legitimate American contender to emerge in a generation.
So far he has knocked out all 29 of his professional opponents without a single one making it through four rounds. His team has brought him along slowly and has not rushed him into dangerous encounters.
But he has also been as dominant against more respectable opponents as he was against the trial horses he faced early on. In August 2012, he knocked out tough veteran Kertson Manswell in the first. Last December, he knocked out fellow unbeaten prospect Kelvin Price in the third.
Last August, Wilder faced former world titleholder Siarhei Liakhovich. This was supposed to be a tougher test for Wilder, but he demolished the former champion with a frightening Round 1 KO.
Firtha is not the best opponent whom Wilder has faced, but the young American cannot afford to overlook him, either. Firtha took the fight to Tyson Fury in September 2011 and had the British giant in big trouble in Round 3, before losing by TKO in five.
He has lost decisions to Johnathon Banks and Alexander Povetkin. He is one of the most experienced heavyweight journeymen on the scene.
Wilder should be able to look very good against him in another high-profile fight. But the unbeaten American could stumble against him if he's not completely on point.