Maybe Jones is ahead by 2 rounds in about the 6th through evasiveness & speed. Then Tua lands a single bomb. Jones' head is flung into orbit but RJJ fights on. Still on pure instinct he evades most punishment, aided by the fact that he no longer has a head to target. Tua edges the next several rounds until in the 10th a body shot to the sternum paralyzes Roy & it is stopped.