The yips: When 'choking' in sport can go next level

Legendary 18-time major winner Jack Nicklaus once stated golf was "90% mental and 10% physical." That's because, unlike most other ball sports, a golfer spends most of the time thinking about their game instead of actually playing it: the contact time a player has with the ball is minuscule compared to the time spent planning the next shot, or frustratedly replaying a previous wonky hit.