Friday's Cali quarterfinal pits M. Tobon against Valerio Aboian on clay. Valerio Aboian is 5-5 across recent matches. M. Tobon comes in at 4 wins from the last ten.

Valerio Aboian is clearly higher-rated on clay — our number puts Aboian around 51%. Tobon arrives with very little recovery time; Aboian comes in off a compressed schedule. Little separates them; Aboian gets the nod on the finest of margins.