Wednesday's Tulln round of 16 pits Marko Topo against Vitaliy Sachko on clay. Vitaliy Sachko has won 6 of the last 10. Marko Topo is 4-6 across recent matches.

There's a wide gap in our ratings on clay, and our number follows from it. Sachko comes in off a compressed schedule. Expect resistance, but the match-level math tilts clearly toward Sachko.