Nevada Athletic Commission
Hatton has also voiced suspicion that Pacquiao may be using performance-enhancing drugs (PEDs). Hatton said he should have made the same blood testing demand as Floyd Mayweather Jr., whose fight against Pacquiao fell through in early 2010. However, the Nevada Athletic Commission (NAC) cited a medical analysis which supported Pacquiao's decision to abstain from blood testing similar to that demanded by Mayweather, stating that drawing blood close to a fight may cause "hematomas, infections or other injuries." Hatton also admitted that he underestimated Pacquiao and that "it could be that he is just a great fighter who has improved."