Caitlin Clark's WNBA debut with the Indiana Fever on Tuesday night averaged 2.13 million viewers across ESPN2 and ESPN Deportes.
That number makes it the most-watched WNBA game since 2001.
The game ranked third for most-watched sporting events on Tuesday, with the Pacers-Knicks leading the way with 4.88 million viewers.
The Mercury-Aces nightcap averaged 464,000 viewers.