**FILE** Washington Kastles' Martina Hingis hits a backhand to Texas Wild's Eugenie Bouchard during their World Team Tennis singles match Friday, July 19, 2013, in Irving, Texas. (AP Photo/Kim Johnson Flodin)

Photo by: Kim Johnson Flodin

**FILE** Washington Kastles' Martina Hingis hits a backhand to Texas Wild's Eugenie Bouchard during their World Team Tennis singles match Friday, July 19, 2013, in Irving, Texas. (AP Photo/Kim Johnson Flodin)