An argument over banned “wearable” devices such as Whoop fitness trackers has erupted at the Australian Open after top players Jannik Sinner, Carlos Alcaraz and Aryna Sabalenka were ordered to remove them before their matches.
Tennis Australia, the organiser of the Australian Open, confirmed that the wearable wrist technology is not permitted at the grand slams – although it said that the tournament is “in discussions” over allowing such devices in the future.