Tuesday's Antofagasta round of 32 pits Alex Barrena against Matheus Pucinelli De Almeida on clay. Matheus Pucinelli De Almeida is 4-6 across recent matches. Alex Barrena brings a 5-match winning streak into this one, 8-2 across the last ten.

On paper it's close: comparable ratings, comparable serve numbers, small margins everywhere. Little separates them; Almeida gets the nod on the finest of margins.