While the 2024 season is yet to begin, we already have the entry lists for events getting filled because it's better to be safe than sorry.
Nothing in tennis is random, but especially a player's calendar. Players plan things ahead and enter a lot of events, some of which they will never play. It's done that way mostly because you don't want to find yourself in a spot where you can't enter an event because you didn't submit your entry in time.
Roger Federer famously always played in Halle skipping over the Queen's Club because he loved the event so much. He won the event ten times in the span of 16 years, which shows just how much he loved it.
That type of endorsement doesn't hurt, and many players flocked to the event over the years. The excellent execution of the event hooked many players to keep returning to the event, which is impressive as they're in the same week as the legendary Queen's Club event, which is in London.
Preparing in London for a Grand Slam in London sounds like a great idea, and yet the Halle Open stands. Some early entries this year include native player Alexander Zverev, who played in two finals there but never won the trophy, and recently finished his 2023 season on a high note.
Stefanos Tsitsipas has also been going to Halle for a few years now, and he's set to do it again next year. Jannik Sinner is also a player that will play at the event next year, which is already a pretty good field. Some more big names will surely sign up in the future as well.