For those that are interested, the United States Anti-Doping agency has released the blood and urine test results from the September 17 welterweight title clash between undefeated pound-for-pound champion Floyd Mayweather and former champion Victor Ortiz. According to the statistics, both fighters were tested a total of ten times by USADA between July 17, 2011 and September 17, 2011. A total of nine samples were collected randomly from each fighter with no advance notice and the tenth and final sample was collected immediately after the fight. When all was said and done, the ten urine samples and the five blood samples that were collected for each fighter all came up negative.
| Athlete | Sample Collection Date | Type of Sample | Determination |
| Floyd Mayweather | July 22, 2011 | Blood and Urine | Negative |
| Floyd Mayweather | July 28, 2011 | Urine | Negative |
| Floyd Mayweather | August 3, 2011 | Urine | Negative |
| Floyd Mayweather | August 10, 2011 | Blood and Urine | Negative |
| Floyd Mayweather | August 15, 2011 | Urine | Negative |
| Floyd Mayweather | August 23, 2011 | Blood and Urine | Negative |
| Floyd Mayweather | August 29, 2011 | Urine | Negative |
| Floyd Mayweather | September 8, 2011 | Blood and Urine | Negative |
| Floyd Mayweather | September 15, 2011 | Urine | Negative |
| Floyd Mayweather | Septembers 17, 2011 | Blood and Urine | Negative |
| Victor Ortiz | July 17, 2011 | Urine | Negative |
| Victor Ortiz | July 27, 2011 | Urine | Negative |
| Victor Ortiz | August 3, 2011 | Urine | Negative |
| Victor Ortiz | August 9, 2011 | Blood and Urine | Negative |
| Victor Ortiz | August 17, 2011 | Urine | Negative |
| Victor Ortiz | August 23, 2011 | Blood and Urine | Negative |
| Victor Ortiz | August 29, 2011 | Blood and Urine | Negative |
| Victor Ortiz | August 31, 2011 | Urine | Negative |
| Victor Ortiz | September 7, 2011 | Blood and Urine | Negative |
| Victor Ortiz | September 17, 2011 | Blood and Urine | Negative |
CLICK HERE FOR OFFICIAL USADA RESULTS
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