Emma Raducanu revealed Tuesday she "couldn't see the ball through the tears" after being targeted by a stalker during last month's Dubai WTA 1000 tournament. The British tennis star was left distraught after a man later said to be displaying "fixated behavior" appeared at a courtside seat during her defeat to Karolina Muchova. The man was escorted away by security, subsequently given a restraining order and banned from attending WTA Tour events. Former US Open champion Raducanu, 22, is making her first tournament appearance since her troubled Dubai campaign at this week's event in California.