Kamila Valieva’s CAS hearing has started. Here’s how it will play out.

Kamila Valieva continued her preparations for the women’s short program on Sunday.Credit...Gabriela Bhaskar/The New York TimesIt is perhaps the most consequential event of the Beijing Olympics, and no one will get to see it.

Just after 8:30 p.m. on Sunday night, the door to a conference room inside the Beijing Continental Grand hotel closed and a hearing began. The task of those inside the room: to determine if the Russian figure skater Kamila Valieva, who learned on Tuesday that she had failed a pre-Olympics doping test, will be able to continue to participate at the Games.

Valieva, 15, has emerged as a breakout star of these Games: the first woman to complete a quad jump in the Olympics,…