 On 18 December 2009, in São Paulo, Cielo broke the world record in the 50-metre freestyle, with a time of 20.91 seconds, at a championship hosted at Esporte Clube Pinheiros, his club in Brazil and where he had trained since 2003. It was the last official event allowing the use of super-suits in Brazil. A day later, he established the best time in the world, 1: 26.12, in the 4 × 50-metre freestyle. The time was not considered a world record because this event is not part of the Olympics and World Championships.
