As highlighted in an expansive profile of boxing's PED issues, Thomas Hauser of SB Nation reported Mayweather received an illegal IV prior to the fight to help with dehydration. The report states United States Anti-Doping Agency agents found evidence of Mayweather using an IV on Friday, May 2, after weigh-ins, though the details behind the findings are still unclear.
What is clear, however, is that Mayweather would be in violation of World Anti-Doping Agency regulations, which do not allow for fighters to receive IV injections. Such injections could be used to mask other banned substances, such as performance-enhancing drugs.
