British No. 1 Jack Draper withdrew from the United Cup on Thursday due to a hip injury.

“As I work to get on top of my hip injury and get match fit, I have unfortunately been advised not to play in the United Cup,” Draper wrote on social media.

“While we are very positive about competing in the Aus Open this year, I know I won’t be able to jump straight into a packed schedule as I manage and strengthen my hip… gutted as I was really looking forward to play in the United Cup for the first time.”

Billy Harris, who was set to be Great Britain’s No. 2 men’s singles player at the United Cup, will now be No. 1 singles. Draper was replaced by Jan Choinski, who will become No. 2 singles.

The women’s players on the team are Katie Boulter, Yuriko Lily Miyazaki and Olivia Nicholls.