Boxers Manny Pacquiao (R) from the Philippines and Floyd Mayweather from the US pose during a press conference on March 11, 2015 in Los Angeles, California, to launch the countdown to their May 2, 2015 super-fight in Las Vegas. (PHOTO CREDIT: Frederic J. Brown—AFP/Getty Images)

Boxer Manny Pacquiao says he wants a rematch with Floyd Mayweather after it was reported this week that Mayweather received an intravenous vitamin injection before their fight in Las Vegas, Nevada this past May.

Representatives for Mayweather told the Nevada State Athletic Commission that the injection was intended “to address concerns related to dehydration,” SB Nation reported. He received a retroactive exemption around three weeks after he beat Pacquiao in a much-publicized boxing match. Without an official exemption, such injections violate World Anti-Doping Agency rules, according to Sports Illustrated.

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SOURCE: TIME, Nolan Feeney