Cleverly should have been stopped in the 3rd by Kovalev

By Scott Gilfoid: If you saw WBO light heavyweight champion Nathan Cleverly (26-1, 12 KO's) get stopped tonight by Sergey Kovalev (22-0-1, 20 KO's) in the 4th round, you might be wondering why the referee Terry O'Connor didn't officially stop the fight in the 3rd round after Cleverly had been knocked down twice. Shortly after