this isn the first time vitor has broken his hand, its possible one of the prior breaks didnt heal properly, when a guy has the type of speed and power to KO with traditional boxing gloves it is certainly likely that training or sparring with 4oz gloves will cause injury. i would prefer wandy not make this fight so openly personal, he should just concentrate on avenging the loss and moving on, im afraid this wont end well for wandy and thats a shame he is better than this