Wimbledon quarterfinalist Nick Kyrgios will appear in court next month to face a charge

A former girlfriend late last year, has alleged the assault.

Jason Moffett, a lawyer representing Kyrgios, told Australia's Canberra Times 

The nature of the allegation is serious, and Mr. Kyrgios takes the allegation very seriously 

Canberra police did not immediately respond to an after-hours request for comment emailed by The Associated Press.

The ATP is aware of the Australian case involving Nick Kyrgios but as legal proceedings are ongoing it would be inappropriate to comment.

Kyrgios, 27, will play Wednesday against Chile's Cristian Garin. It's the third Grand Slam quarterfinal