By Robert Addams: Tyrone Spong (14-0, 13 KOs) has been pulled from his scheduled fight against Oleksandr Usyk (16-0, 12 KOs) for this Saturday night on DAZN after Matchroom Boxing promoter Eddie Hearn revealed that Spong’s VADA test came up with adverse finding. He tested positive for the banned substance clomiphene, according to Dan Rafael. […]