Tuesday's US Open first round pits Elise Mertens against Kaitlin Quevedo on hard. Elise Mertens comes in at 6 wins from the last ten. Kaitlin Quevedo is searching for form, having lost 3 in a row (5 of the last 10).

Mertens's 63.4% behind the first serve (against 60.1% for Quevedo) means break chances should be scarce in one direction. The edge belongs to Mertens — real, but not the kind you take for granted at this level.