Dominic Thiem's comeback hits setback after positive Covid test following appearance at Marbella Challenger
Dominic Thiem's fortunes have taken another turn for the worse after announcing that his return to tennis has been halted by a positive Covid test. Since winning the 2020 US Open, the 28-year-old has struggled desperately with poor form and a serious wrist injury and his appearance at the Marbella Challenger on Tuesday was the first time he had played a competitive match in nine months.


