World-class players Calvin Hemery, Novak Djokovic and Maria Sharapova are on the tennis court in moments of defeat and exhaustion. They bang their rackets to the ground and wipe the sweat off their faces. In 90 seconds, however, they can change everything. 90 seconds is all it takes to regroup and think of a killer comeback. With the new mindset, they can give it all they've got. Now, they're game raisers.