Britain's Dan Evans and Andy Murray will seek to make it four Britons in the last 16 of the US Open when they compete in the third round on Saturday.
Evans, 26, takes on third seed Stan Wawrinka of Switzerland at around 22:00 BST as he bids to make the fourth round of a Grand Slam for the first time.
Murray, the second seed, is yet to drop a set and faces Italy's world number 40 Paolo Lorenzi at around 19:00 BST.
Johanna Konta and Kyle Edmund reached the last 16 with wins on Friday.
Evans, ranked 333 last year, beat German rising star Alexander Zverev in the second round and is on the verge of breaking into the world's top 50 players.