Tuesday's Montreux round of 32 pits Rebeka Masarova against Simona Waltert on clay. Rebeka Masarova comes in at 6 wins from the last ten. Simona Waltert limps in on a 3-match losing skid, just 4 wins in 10.

The serve is where this match separates: Masarova has been winning 67.8% of first-serve points to Waltert's 60.5%, and on clay that gap compounds fast. This one is close to a coin flip, and the lean toward Masarova is exactly that — a lean.