Jannik Sinner, Aryna Sabalenka, Coco Gauff and Carlos Alcaraz are among a group of top-10 tennis players who have sent a second letter to the four grand slam tournaments asking for more money, more control and greater contributions to pension, health and maternity benefits.

The players are asking for their share of prizemoney at grand slams to increase from 16 to 22 per cent of tournament revenue by 2030, which would see the Australian Open prize pool exceed $100 million and the US Open surpass $150 million.

The combined prize pool across the four slams in 2025 was $440 million. That number could exceed $500 million by 2030 if tournament organisers continue incremental rises each year and agree to what players are asking for.

The letter, which was signed by other top players such as Iga

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