With that victory , he was also awarded the vacant IBO title .
Lennox Lewis became undisputed champion by defeating Evander Holyfield , successfully unifiying his WBC belt with Holyfield 's WBA and IBF belts .
With that victory , Lennox Lewis was also awarded the vacant IBO title .
Lennox Lewis became undisputed champion by defeating Evander Holyfield , successfully unifiying his WBC belt with Holyfield 's WBA and IBF belts .