Tim Tszyu's blockbuster world-title fight with Jermell Charlo has been postponed after his American opponent broke his left hand in training.
Tszyu had been scheduled to fight for undisputed super-welterweight honours in Las Vegas on January 28.
But Charlo broke his left hand in two places - between the pinkie and ring finger and at the base of the thumb - after landing a punch in sparring at his gym in Houston on Tuesday.