TYSON Fury insists fighting Nicolai Firtha in Belfast's King's Hall on September 17 is a gamble. Fury has chosen Firtha after Martin Rogan pulled out and the unbeaten British and Commonwealth heavyweight king says the American is dangerous after taking WBA champ Alexander Povetkin the distance in December. "Anybody who knows anything about boxing can see that this is a risky fight because Firtha has gone the distance with the man who now holds the WBA belt," said Fury. "With two weeks to go I know this is a risk, a gamble, but I'm a true fighting man, a man of honour, and I'm prepared to fight any man on the planet."