<prompt> Pedzisa mutsara unotevera: Ratsimbazafy akabva apinda mumakwikwi e4 × 100 metres relay pa1999 World Championships uye  <response>: Mitambo yeOlympic ya2000, nguva dzose pasina kufambira mberi kubva pakupisa, kunyange zvazvo nhoroondo yenyika ye43.61 masekondi yakagadzwa paOlympics. 