Photo: Instagram/KSI According to Mail Sport, KSI 's recent victory over Joe Fournier in the cross-over boxing scene may be in jeopardy. The boxing authorities plan to review footage of the fight after KSI appeared to land an illegal elbow on Fournier. KSI won the fight with a brutal second-round knockout over Fournier, who is 40 years old. However, footage of the final exchanges of the fight appeared to show KSI land an illegal elbow on Fournier. Boxing authorities will review the footage to check for the apparent elbow and then make a decision. The incident occurred in the second round of the fight after KSI had landed a huge overhand right that sent Fournier stumbling backwards. Photo: Instagram/KSI has been marked by his ability to consistently reinvent himself and find success in new areas. He has become a true multimedia star, with accomplishments across YouTube, music, boxing, and business. KSI's knockout victory has been put in jeopardy after replays appeared to show t...