2-time US champ, Olympic hopeful Liu out with COVID-19

Alysa Liu skates in the ladies short program event during the U.S. Figure Skating Championships in Nashville, Tenn., Thursday, Jan. 6, 2022. (Andrew Nelles/The Tennessean via AP)

Alysa Liu skates in the ladies short program event during the U.S. Figure Skating Championships in Nashville, Tenn., Thursday, Jan. 6, 2022. (Andrew Nelles/The Tennessean via AP)

Alysa Liu skates in the ladies short program event during the U.S. Figure Skating Championships in Nashville, Tenn., Thursday, Jan. 6, 2022. (Andrew Nelles/The Tennessean via AP)

Alysa Liu competes in the women's short program during the U.S. Figure Skating Championships in Nashville, Tenn., Thursday, Jan. 6, 2022. (Andrew Nelles/The Tennessean via AP)