Saturday's Queretaro quarterfinal pits Elizabeth Mandlik against Fiona Ferro on clay. Fiona Ferro has won 3 in a row and 8 of the last 10 overall. Elizabeth Mandlik comes in at 6 wins from the last ten.

Fiona Ferro is clearly higher-rated on clay — our number puts Ferro around 67%. Ferro comes in off a compressed schedule. Expect resistance, but the match-level math tilts clearly toward Ferro.