Meanwhile, Cesar Cielo can defend his 50m and 100m freestyle titles after the Court of Arbitration for Sport today decided not to ban him over a positive drugs test.
He was one of four Brazilians who failed the test in May but the CAS rejected an appeal from governing body FINA that the quartet be suspended and, instead, issued only a warning.
Cielo said he consumed the drug, furosemide, in a contaminated batch of a food supplement he regularly uses.