 Tennis stars are often mobbed for autographs after they spend hours competing on the court. It can become perilous, like when a fan pelted Iga Swiatek with a giant ball at the Australian Open. World No. 4 Stefanos Tsitsipas has a solution: Hand out pre-signed photos of yourself. Loading Something is loading. Thanks for signing ... One tennis star has a genius solution to help top players when... 