Iga Swiatek’s struggles continued with a tearful withdrawal during her third-round match against Ann Li at the Madrid Open. The former world number one, who is yet to advance beyond the quarter-finals at any event this season, revealed afterwards she is battling a virus and she had her temperature and blood pressure checked after losing the opening two games of the deciding set. After taking pills, Swiatek initially continued, but she looked lethargic and pulled the plug trailing American Li 6-7 (4) 6-2 0-3 0-30 before walking off the court in tears. “The last two days were pretty terrible,” said the Pole. “I think I have some virus. “It’s been some hours fine, some hours pretty bad. I heard there is something going on between players, that the virus is somewhere on site. I’m sure I’ll be fine in a couple of days, but I had zero energy. “I just felt really bad physically, and yesterday, even worse.…