A spot in the next round is at stake on Friday, when Elise Mertens goes up against Yuliia Starodubtseva in the Monterrey quarterfinal. Elise Mertens is searching for form, having lost 2 in a row (6 of the last 10). Yuliia Starodubtseva is 4-6 across recent matches.
Mertens's 63.4% behind the first serve (against 58.1% for Starodubtseva) means break chances should be scarce in one direction. Mertens should have enough here, though Starodubtseva has the tools to make the scoreboard uncomfortable.