He won gold at the 2005 FINA World Championships in Montreal for the men's open water 25 km.

Meca took silver in the 5 km event at the 2000 World Championships in Hawaii.

[1] He was able to participate in World Championships in year 2000 because the sanction had not then been confirmed by the FINA.

The sanction that was finally lifted because the swimmer was considered clean, after a long battle to prove his innocence.

[citation needed] It was during the time of this sanction that he started focusing on challenges which nobody had done before.