October 2 in a 32 player draw.

The larger women's tournament takes place September 25 to October 6 and features US Open champions Aryna Sabalenka, Coco Gauff of the USA and Naomi Osaka of Japan in a 128 player draw.

The winner of the women's tournament will receive $1,100,000 and 1,000 rankings points while the men's champion will receive $695,750 and 500 rankings points.

The 23 year old world number one Sinner could only meet the 21 year old world number three Alcaraz in the final round match.

All four grand slam tournaments this year were won between the two players.

Head to head Alcaraz leads Sinner 5-4 after winning both of the duo's meetings this year.

Alcaraz beat Sinner in the semifinal round this year at both Indian Wells and Roland Garros.

In the women's tournament, the fourth seeded 20 year old Gauff could meet the unseeded 26 year old Osaka in the fourth round with the winner possibly meeting the second seeded 30 year old Jessica Pegula of the USA in the semifinals.

Osaka currently ranked 73 following the birth of her daughter is tied with the sixth ranked Guaff head to head 2-2.

Guaff won the pair's last meeting in 2022 at San Jose 6-4, 6-4.

The player emerging from the bottom half of the women's draw could face the 26 year old Sabalenka in the final round.

Osaka leads Sabalenka 1-0 head to head.

Gauff leads Sabalenka 4-3 head to head.

Sabalenka leads Pegula head to head 6-2 with Sabalenka winning the pair's last meeting earlier this month in the final of the US Open 7-5, 7-5.