A spot in the next round is at stake on Wednesday, when Janice Tjen goes up against Sloane Stephens in the Guadalajara round of 16. Janice Tjen has won 4 of the last 10. Sloane Stephens is 4-6 across recent matches.
Tjen's 67.5% behind the first serve (against 60.8% for Stephens) means break chances should be scarce in one direction. Little separates them; Tjen gets the nod on the finest of margins.