Gonzalo Villanueva and Ivan Justo Guido meet in the quarterfinal at Curitiba on Friday. Ivan Justo Guido has won 6 of the last 10. Gonzalo Villanueva is 6-4 across recent matches.
Ivan Justo Guido is clearly higher-rated on clay — our number puts Guido around 58%. Villanueva comes in off a compressed schedule; Guido comes in off a compressed schedule. Little separates them; Guido gets the nod on the finest of margins.