Cilic could miss Aus Open

Andy Murray shows battling spirit to win first round match at European Open

"An MRI exam in Zagreb showed that after some 20 days of therapy the situation with the (right upper arm) injury has improved," 26-year-old Cilic told AFP.

"Since there is very little time for a full recovery and training, my appearance at the Australian Open is unfortunately under a big question mark. 

“I have not cancelled my appearance in Melbourne. I will leave it for another seven to eight days to see how the situation will develop," he added.

The Australian Open starts on January 19.