Karolina Pliskova of Czech Republic celebrates defeating Serena Williams of the US during their 2016 US Open Womens Singles semifinal match at the USTA Billie Jean King National Tennis Center in New York on September 8, 2016. Serena Williams crashed out of the US Open on September 8, her semi-final defeat to Karolina Pliskova costing her a shot at a 23rd Grand Slam title and a record 187th straight week at number one. / AFP PHOTO / Timothy A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP via Getty Images)
