How a wearable caused an Australian Open debate over tennis players’ data‎

MELBOURNE, Australia — Aryna Sabalenka, the world No. 1, has urged the Grand Slams to reverse a ban on wearable technology following a series of controversies at the Australian Open. Sabalenka, along with the top men’s player Carlos Alcaraz, has been forbidden from wearing a band produced by American company Whoop. The band tracks metrics like heart rate variability, sleep stages, skin temperature and blood oxygenation; World No. 2 and two-time defending champion Jannik Sinner was also asked to