Iga Swiatek and Elena Rybakina will look to back up their opening wins at the WTA Finals on day three of the tournament in Riyadh.
Swiatek swept aside a rusty Madison Keys 6-1 6-2 while Rybakina took down Wimbledon and US Open finalist Amanda Anisimova on Saturday.
Swiatek has defeated Rybakina in all four of their meetings this season, after previously trailing their head-to-head 4-2 at the start of the year.
In the second all-American match of the week, the loser of the match between Anisimova and Keys could face an early elimination from the Finals.
On Sunday, Aryna Sabalenka opened her campaign with a dominant win over Jasmine Paolini while Jessica Pegula beat a struggling Coco Gauff.
WTA Finals order of play, results tournament schedule
Saturday 1 November
(1) Sara Errani and Jasmine Paolini def. (8) Asia Muhammad and Demi Schuurs, 6-3 6-3
(2) Iga Swiatek def. (7) Madison Keys, 6-1 6-2
(6) Elena Rybakina def. (4) Amanda Anisimova, 6-3 6-1
(6) Hsieh Su-Wei and Jelena Ostapenko def. (4) Veronika Kudermetova and Elise Mertens, 1-6 7-5 (10-5)
Sunday 2 November
(3) Gabriela Dabrowski and Erin Routliffe def. (5) Mirra Andreeva and Diana Shnaider, 6-3, 7-6 (2)
(1) Aryna Sabalenka def. (8) Jasmine Paolini, 6-3, 6-1
(5) Jessica Pegula def. (3) Coco Gauff, 6-3, 6-7 (4), 6-2.
Followed by: (2) Katerina Siniakova and Taylor Townsend def. (7) Timea Babos and Luisa Stefani, 6-2 3-6 (10-6)
Monday 3 November: Singles, doubles round-robin
(6) Hsieh Su-Wei and Jelena Ostapenko def. (1) Sara Errani and Jasmine Paolini, 6-3 6-4
(6) Elena Rybakina def. (2) Iga Swiatek, 3-6 6-1 6-0
(4) Amanda Anisimova v (7) Madison Keys
Followed by: (4) Veronika Kudermetova and Elise Mertens v (8) Asia Muhammad and Demi Schuurs
Tuesday 4 November: Singles, doubles round-robin
From 12:00pm GMT: (2) Katerina Siniakova and Taylor Townsend vs (3) Gabriela Dabrowski and Erin Routliffe
Not before 2pm GMT: (3) Coco Gauff vs (8) Jasmine Paolini
Followed by: (1) Aryna Sabalenka vs (5) Jessica Pegula
Followed by: 5) Mirra Andreeva and Diana Shnaider vs (7) Timea Babos and Luisa Stefani
Wednesday 5 November: Singles, doubles round-robin
From 12:00pm GMT: Doubles
Not before 2pm GMT: Singles
Followed by: Singles
Followed by: Doubles
Thursday 6 November: Singles, doubles round-robin
From 12:00pm GMT: Doubles
Not before 2pm GMT: Singles
Followed by: Singles
Followed by: Doubles
Friday 7 November: Singles, doubles semi-finals
From 12:30pm GMT: Doubles semi-final 1
Not before 3pm GMT: Singles semi-final 1
Followed by: Singles semi-final 2
Followed by: Doubles semi-final 2
Saturday 8 November: Singles, doubles finals
From 1pm GMT: Doubles final
Not before 4pm GMT: Singles final
WTA Finals prize money
There is a total of $15.5m (£12m) in prize money across the event, an increase of $250,000 from 2024. The women’s singles champion can win a maximum of $5,235,000 if she goes undefeated.
Singles
Participant fee: $340,000
Round robin win: $355,000
Semi-final win: $1,290,000
Finals win: $2,540,000
Doubles (per team)
Participant fee: $142,000
Round robin win: $72,000
Semi-final win: $257,000
Finals win: $524,000
WTA Finals ranking points
The ranking points on offer is the same for both draws, with an undefeated champion earning 1,500 ranking points.
Round robin win: 200
Semi-final win: 400
Finals win: 500
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