Jeff Thomas actually out pointed Fury at lightweight over 6 rounds a few years ago, although Jeff is too modest to mention it. When they say Fury is an unbeaten heavyweight, notice how they emphasise the word "heavyweight". They conveniently keep quiet about his losses at the lighter weights.
Come on guys! The OP has come here and asked a genuine question looking for a genuine answer. Don't be a gang of ****s all your lives!!!! To the original poster. Tyson Fury has only lost 1 fight. It was in his second pro contest against Joe Bugner in Manilla.
The loss to Ian 'Skyscrappa' Napa was down to the wrong preparation, IMO. Fury had been sparring with a comebacking Baby Jake Matlala - even bigger than Napa.