Wednesday's Gstaad round of 16 pits Valentin Vacherot against Yannick Hanfmann on clay. Yannick Hanfmann is searching for form, having lost 2 in a row (4 of the last 10). Valentin Vacherot is 6-4 across recent matches.

The two have never played — a first meeting always adds a layer of uncertainty the numbers can't fully capture.

There's a wide gap in our ratings on clay, and our number follows from it. Hanfmann comes in off a compressed schedule. A tiebreak or two would surprise nobody, with Hanfmann fractionally more likely to land the big points.