INDIAN WELLS, Calif. (AP) — The BNP Paribas Open, the near-major tennis tournament set to begin this week in the California desert, won’t be played as scheduled after a case of coronavirus was confirmed in the Coachella Valley.

It’s the largest U.S. sporting event to be called off over concerns about the spread of the disease. The South by Southwest Festival in Austin, Texas, was canceled Friday.

The announcement came Sunday night after many players were already in the desert practicing. Qualifying matches were to begin Monday with women’s main draw matches starting Wednesday and the men’s draw beginning Thursday.

The Riverside County Public Health Department declared a public health emergency for the desert cities 110 miles east of Los Angeles, including Indian Wells where the ATP and WTA tours were to play the two-week tournament.