Nick Kyrgios in doubt for Australian Open after suffering abdominal strain

Nick Kyrgios is in doubt for the Australian Open after pulling out of a pre-tournament exhibition match against Novak Djokovic.

“Unfortunately won’t be able to play my good friend [Novak Djokovic] this Thursday on the 9th as I’ve had an ultrasound on my abdominal and have a grade 1 strain,”…