Day 4: Schedule of Play for Winston-Salem Open, Exciting Matchups Abound

Paire takes on Ugo Humbert, who reached the round of 16 at Wimbledon and has skyrocketed in the rankings this year. Denis Shapovalov hopes to strike a rich vein of form and take his first title of the year, but must first prevail against up-and-comer Miomir Kecmanovic.

Rublev is in rare form, having beaten Federer in the Cincinnati Masters round of 16 last week. Sam Querrey will be a formidable opponent, and the powerful American has the tools to stave off an upset although they are separated by only one spot in the rankings at #46 and #47.

The imposing Hubert Hurkacz from Poland will take on veteran Feliciano Lopez. Lopez scraped by his countryman Pablo Andujar in the last round.

Francis Tiafoe, who won his first ATP match at this tournament four years ago, will seek to salvage a disappointing season thus far. The American hopes to find his form before the US Open. He takes on Filip Krajinovic who ousted former Wimbledon finalist Tomas Berdych in three sets yesterday.