In Portugal, Kiko is to Frederico, like Nole is to Novak in Serbia, or Javi is to Javier in Spain.
There is also Fredericos known by Fred too. Like Frederico Gil, for example. In my point of view, I think "Kiko" is more childish, but that can change depending the perspective of each person, of course.
São Leopoldo Challenger, Brazil,las November. Frederico Silva won one round.