Guan's father, Guan Hanwen, fell in love with golf when university friends, who'd picked up the game while working overseas, invited him to play.

WSJ: A Master Class

After Guan qualified for the Masters, Ho, the Lion Lake owner, built a practice green with low-cut grass to match the speed of Augusta National's, and allowed only Guan to play on it.

WSJ: Guan Tianlang: A Schoolboy Steals Day One of the Masters

Though Guan had played about a dozen practice rounds before the tournament, it often takes golfers years to figure out the best way to play Augusta National and Guan repeatedly sought the advice of his caddie, Brian Tam, who is a regular caddie at the course.

NPR: Even With 1-Stroke Penalty, 14-Year-Old Makes Cut