Monday's Winston-Salem round of 64 pits Marcos Giron against Valentin Royer on hard. Marcos Giron has dropped 3 straight and sits at 3-7 over the last ten. Valentin Royer has won 5 in a row and 6 of the last 10 overall.

The serve is where this match separates: Giron has been winning 70.5% of first-serve points to Royer's 26.1%, and on hard that gap compounds fast. Little separates them; Giron gets the nod on the finest of margins.