7. Denis Boystov 33-0-0
Denis Boystov is a Russian born fighter with a great amateur background as well as a great professional record, Boystov is a born fighter, great technically with fantastic conditioning.The Russian has the biggest winning streak in heavyweight boxing although the quality of some of his competitors can be brought into question. The problem this talented heavyweight has are serious injuries, Boystov has had to have surgeries on his hand and his elbow that have kept him out of the ring for long periods of time. At 27 he still has plenty of time to break into the big fights but he will have to make sure injuries don't ruin a potentially exciting career.