Tuesday's Curitiba (Brazil) round of 32 pits Julia Riera against Rebeka Masarova on clay. Rebeka Masarova has won 5 of the last 10. Julia Riera limps in on a 2-match losing skid, just 7 wins in 10.
Masarova's 67.4% behind the first serve (against 61.9% for Riera) means break chances should be scarce in one direction. Expect resistance, but the match-level math tilts clearly toward Masarova.