Defending Wimbledon champion Carlos Alcaraz was put through the wringer again on Friday before moving into the fourth round but fellow Grand Slam winners Naomi Osaka and Madison Keys fell by the wayside at the All England Club.

It might just be the best deal in all of major professional sports. Tennis fans can get a chance to watch stars such as Carlos Alcaraz compete on Centre Court at Wimbledon by forking over just 15 pounds — about $20 at the current exchange rate.

Reigning Wimbledon tennis champion Carlos Alcaraz continues his journey through the men’s singles bracket with a third-round match against Jan-Lennard Struff.