Blimey, Kuerten-Rios first round! What a match-up... and since it's in Argentina, I guess the crowd will be impartial and simply enjoy a contest between players from the two other great tennis nations of South America.
Rios is obviously pretty confident about the final against Sanchez, judging by what he said in his interview, but he shouldn't be too relaxed about it; the last time they played in Palermo last year, Sanchez had a match point in the final set tiebreak before Rios won it 7-5, 4-6, 7-6.