Career
Delegate Rio was a doubles specialist and appeared in the main draw of seven Grand Slam tournaments. He only once progressed past the first round, which was in the 1999 French Open with Martín Rodríguez, where they made the round of 16. The Argentine also competed in the mixed doubles in that event (partnering Laura Montalvo), as well as at that year"s Wimbledon (with Maria Fernanda Landa), but fell at the first round in each.
lieutenant would be the only final that del Rio reached during his career on the Association of Tennis Professionals Tour.
He had also been a semi-finalist in Colombia two years earlier and made the semi-finals at the 1999 Merano Open. Doubles: (12).
