I'm on Stephens at -6.5 (+112) and Nishikori at -7 at -110
both bets risking 1 unit
Stephens is a good clay player, she was 4-0 in her last match on clay, and lost in the first round at her previous tournament on clay to Halep, probably the best female clay player in the world, she was competitive with Halep too, winning the first set and almost winning the second set. She moves well her game is solid on clay. She's always been better at majors.
Nishikori has a strong clay record, he should come out strong