By Luke Furman

Johnathon Banks, trainer of WBO/IBO/WBA/IBF champion Wladimir Klitschko (62-3, 52KOs), says the heavyweight king is displaying nothing but his best in recent sparring sessions. Wladimir used Kevin Johnson, Olympic gold winner Anthony Joshua and several others for sparring.

The training camp is taking place in Going, Austria.

Banks is most impressed with Klitschko's stamina during sparring. He says Klitschko is keeping pace, without tiring, round after round.

"Wladimir is a real workhorse, he is probably the only heavyweight in the world who could go 15 to 16 rounds at a full pace," Banks said.

Luke Furman covers boxing for bokser.org.