HAMBURG, GERMANY - Wladimir Klitschko of Ukraine, and David Haye of England, hold their final workouts to promote this Saturday's WBO, IBO, WBA and IBF heavyweight unification at the Imtech arena in Hamburg. Wladimir's older brother, WBC champion Vitali Klitschko, was also at ringside observing the workouts. Both camps threw a few verbal jabs from ringside during the workouts.