US Olympic swimming legend Michael Phelps (L) and US Anti-Doping Agency chief executive Travis Tygart are sworn in before testimony before a US congressional committee
US Olympic swimming legend Michael Phelps (L) and US Anti-Doping Agency chief executive Travis Tygart are sworn in before testimony before a US congressional committee
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Olympic swimming icon Michael Phelps and four-time gold medallist Allison Schmitt called for reform of the World Anti-Doping Agency (WADA) on Tuesday over the global body's handling of the 2021 Chinese swimming drugs scandal.