His father, Jairo Velasco Sr., was a Colombian tennis player, who emigrated to Spain.

The pair appeared together in the main draw of six Grand Slams, but only once made it past the opening round.

That was at the 2000 French Open, where they upset ninth seeds Mahesh Bhupathi and David Prinosil to make the third round.

[1] Before teaming up with Carrasco in 1998, Velasco made the semi-finals of the Campionati Internazionali di San Marino, with Joan Balcells, in 1996.

He also played Grand Slam tennis with Virginia Ruano Pascual at the 2000 Wimbledon Championships and Mariano Hood in the 2001 Australian Open.