Some of the world's biggest tennis stars are demanding a bigger slice of the Grand Slam revenue pie—and they're not afraid to walk away if they don't get it.

World No. 1 Aryna Sabalenka dropped a bombshell at a press conference ahead of the Italian Open, hinting at a potential player boycott of Grand Slam tournaments if prize money shares don't improve. "Without us there wouldn't be a tournament and there wouldn't be that entertainment," Sabalenka told reporters. "I think at some point we will boycott it. I feel like that's going to be the only way to fight for our rights."

The Belarusian star's comments come on the heels of a strongly worded letter signed by top-ranked players from both the WTA and ATP tours, including Jannik Sinner, Carlos Alcaraz, and Coco Gauff. The letter voiced "deep disappointment" with the French Open's announced prize pool for 2026.

At the heart of the issue? A shrinking share of tournament revenue. According to the players, their cut of Roland Garros revenue has dropped from 15.5% in 2024 to a projected 14.9% in 2026. The players are pushing for a 22% share—a figure they say would align Grand Slams with ATP and WTA Combined 1000 events.

"Roland Garros generated 395 million euros in revenue in 2025, a 14% year-on-year increase, yet prize money rose by just 5.4%," the letter states. With estimated revenues topping 400 million euros for this year's tournament, players argue they're still getting less than 15%—far short of the 22% they've requested.

This isn't the first time players have rallied for better compensation. Similar calls were made ahead of the Australian Open, and now the conversation is heating up again as the French Open looms on May 24. Whether the tournament organizers will budge remains to be seen—but one thing's clear: the world's best are ready to serve up some serious pressure.