ORDER OF PLAY
Play starts at 1pm
Jelena OSTAPENKO (LAT) / Dayana YASTREMSKA (UKR) v [WC] Sofia KENIN (USA) / Bethanie MATTEK-SANDS (USA)
After 1 ATP match
Not before 4:30pm
Ashleigh BARTY (AUS)  v Naomi OSAKA (JPN) 
Ashleigh Barty holds a 2-1 advantage over Naomi Osaka in their career head-to-head. The pair are split 1-1 on hard courts, with Osaka winning the most recent such meeting at the 2018 Australian Open.
They last played on grass in Nottingham, with Barty winning that encounter, 6-3, 6-4 last year.
None of their previous three meetings have gone the distance. Indeed, none of the six sets they have played have taken more than 10 games to decide.
Barty has been taken the distance in each of her last three matches, all of which have taken more than two hours. She has spent exactly seven hours on court in these encounters.
Osaka’s longest match this week was against Bianca Andreescu in the quarterfinals, which last a little over two hours. She edged the in-form Canadian, 5-7, 6-3, 6-4.
The WTA World No.1 has won three of her last four matches against Top 5 players, dating back to a win over Angelique Kerber at Wuhan in 2018.
This will be Osaka’s first match against a Top 5 player since last year’s WTA Finals. She has lost all of her last three, with Elina Svitolina, Simona Halep and Kerber getting the better of her.
The Japanese has won the only Premier Mandatory final she has reached, defeating Daria Kasatkina, 6-3, 6-2 at Indian Wells last year.
Barty has already won Miami this year at Premier Mandatory level; she defeated Karolina Pliskova, 7-6(1), 6-3.
The winner of this match will be the first winner from outside Europe since Serena Williams picked up the crown in 2013.