Ex-finalist Marin Cilic has withdrawn from Wimbledon after testing positive for COVID-19, the Croatian said on Monday. "I've been self-isolating...was hopeful I'd be ready but unfortunately I'm still feeling unwell and unable to compete at my best...heartbroken to be missing Wimbledon," he added. The 33-year-old was seeded 14th. He has been replaced by lucky loser Nuno Borges of Portugal.