Rafael Nadal beats Leonardo Mayer 6-7 (3-7) 6-3 6-1 6-4
Nadal loses marathon first set to 'lucky loser' from Argentina
But world number one fights back to reach last 16
Federer v Lopez - follow via our live scores page
World number one Pliskova saves match point before beating Zhang
Thiem, Del Potro & Goffin through in men's draw
Fabio Fognini suspended for verbally abusing an umpire
Nadal v Mayer
World number one Nadal, a two-time champ at Flushing Meadows, already has one Grand Slam title under his belt this year.
He's won 51 of his 60 matches this year and he's the only player on the tour with more than 20 victories on both the clay and hard courts.
He also has a career record of 405 victories on hard courts, with just 124 defeats to his name.
Image source, Getty ImagesNadal v Mayer
Yeah. That rain's arrived. The roof over Arthur Ashe is slowly closing as Rafa Nadal and Leonardo Mayer, after a lengthy wait, make their way onto court. Rafa is wearing what can only be described as a highlighter pink outfit. It's migraine inducing.
Piers Newbery
BBC Sport at Flushing Meadows
It's been a suitably cool and cloudy day in New York for the start of Labor Day Weekend, the unofficial end of summer. It also heralds the final week of Grand Slam tennis this year, and a golden opportunity for two new names to join the list of major winners. Or possibly two players in their mid-to-late 30s. Honestly, nobody here has a clue. It's going to be fun finding out though.
For now, all those scheduled on the outside courts will want to get a shift on as rain is forecast for later, and only those on Arthur Ashe Stadium will be protected. Albeit amid a cacophonous din as 23,000 people have a giant conversation.
Image source, BBC SportHiya! Welcome to our live text coverage of day six of the US Open. First up, Rafa Nadal v Leonardo Mayer.
Where else would you want to be on a Saturday night?
Image source, Getty Images