Tennis changed, and Roddick could have been forgiven for taking a realistic approach to the altered landscape, humming “to everything, turn, turn, turn . . .” as he plugged away, shortcomings and all, ...

By 17, Vania King had won her first WTA title and cracked the top 50 in the rankings. There was just one problem—she wasn’t sure she actually liked playing tennis. “I came up pretty fast when I was 16 ...