Rising Spanish star Paula Badosa is racing the clock to be fit for the Australian Open after having her isolation period restarted following a positive COVID-19 test. The 23-year-old had already been isolating in Melbourne under the mandatory 14-day quarantine rule after two co-passengers on a tournament-chartered flight from Abu Dhabi tested positive. Badosa said on social media on January 21 she had been moved to another “health hotel” to recuperate after feeling unwell. The world No.67 went on Twitter to say: “I have some bad news. Today, I received a positive COVID-19 test result. “I’m feeling unwell and have some symptoms, but I’ll try to recover as soon as possible listening to the doctors. “I have been taken to a health hotel to self-isolate and be monitored. Thanks for your support. We’ll be back stronger. Paula.” Victorian Chief Health Officer Brett Sutton said Badosa, who arrived a week ago, …