Del Potro to miss Australian Open

Fifth-ranked Juan Martin del Potro will miss the Australian Open as he continues his recovery from a knee injury.

"I hope you have a great 2019. Recovery is going great and I will tell you later where I will be making my comeback," the 30-year-old Argentine wrote on Twitter.

Juan Martin Del Potro of Argentina watches his shot as he plays against Borna Coric of Croatia in the men's singles match of the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Thursday, Oct. 11, 2018. [Photo: AP]

"Unfortunately it won't happen in Australia ... but I'm happy with my progress."

The U.S. Open finalist fractured his right kneecap after a fall at the Shanghai Masters in October.

The Australian Open begins Jan. 14.