A spot in the next round is at stake on Friday, when Anna Blinkova goes up against Julia Riera in the Barranquilla quarterfinal. Julia Riera is 9-1 across recent matches. Anna Blinkova has won 4 of the last 10.

On paper it's close: comparable ratings, comparable serve numbers, small margins everywhere. Blinkova comes in off a compressed schedule; Riera comes in off a compressed schedule. A tiebreak or two would surprise nobody, with Riera fractionally more likely to land the big points.