Marcelo played in the Pan Am Games this week and scored an upset win over Eduardo Schwank (although beating Schwank isn't such a big achievement these days
). Really bad luck to follow though, he injured his ankle against Alejandro Gonzalez and was forced to retire 3-5 down. Shame because this was a great opportunity for Marcelo.
I mentioned in GM, Rafael is coaching Marcelo now and isn't competing seriously himself anymore. He'll still play Davis Cup and doubles with his brother, but it doesn't look like he'll be playing much singles on the ITF tour.