New Delhi, Jan. 9 -- Nick Kyrgios says he's not fit enough to play singles at the Australian Open but will compete in doubles with his Australian mate Thanasi Kokkinakis at Melbourne Park.

Kyrgios, who played in the so-called " Battle of the Sexes " exhibition against Aryna Sabalenka last month, had been tipped by local media to receive one of the three remaining wild-card entries from Tennis Australia.

TA announced later on Friday that 2014 champion Stan Wawrinka and Australian players Jordan Thompson and Chris O'Connell had received them. The 40-year-old Wawrinka has already announced this year will be his final season on tour.

Kyrgios said Friday on social media he would only play doubles in the tournament, which starts Jan. 18. Mul...