Easier said than done. When an opponent charges forward, either Wlad darts back or a straight right or left hook with legit one-punch KO power is coming at you. Most fighters don't throw lead body punches, they set it up with something. If you throw a jab or right hand to set it up, Wlad is either gone or you have to worry about getting out of the way of a right hand. He's impossible to throw combinations against (except for weak, running forward combos) and coming forward while dropping your hands to throw a left hook to the body is very dangerous.

Chris Byrd did great work against Vitali to the body, it's why he beat him IMO, but that was 15 or 16 years ago. Vitali and Wlad learned from that.