Patrick taking a bite of the churro and letting Art take one was unscripted. Josh O'Connor was starving and it was the first time he ever had churros.
To prepare for her role, Zendaya spent three months with pro tennis player-turned-coach, Brad Gilbert.
The New Rochelle Umpire is played by Darnell Appling, an assistant to Zendaya. To prepare for his role, Appling took professional umpire lessons.
Austin Butler and Timothée Chalamet were considered for the role of Art Donaldson before Mike Faist was cast.
Luca Guadagnino visited Zendaya on the set of Dune: Part Two (2024) in order to complete ADR for Challengers (2024).