He knew what percentage of his shots went down the fairway (40.9 percent), what percentage missed going left (31.0 percent), and what percentage missed going right (28.1 percent). He tracked his driving accuracy for each round of golf, and he graphed his recovery performance (41.5 percent “scrambling” and 23.5 percent “sand saves”).7 He used sophisticated 3-D technology at a facility outside Atlanta to capture a three-dimensional scan of his movements. Sharing this information with his coach, he obtained precise feedback and concrete suggestions for the next swing (“widen your stance by one
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