The undercard should feature.Serena Williams vs Tiger Woods, Lebron James vs Christian Ronaldo. As much as il look forward to watching it, especially being an Irish man i cant really see its value in terms of sport. These competitors are from to different sports. Mcgregor never boxed professional or even at a senior elite level in Ireland, Mayweather is one of the best pound for pound boxers of all time. It shouldnt be much of a contest but i hope im proved wrong