On a day when countless eighth graders across the country saw their orthodontists and fretted over potential dates for the middle school graduation dance, Guan calmly played in the world's most famous golf tournament in a threesome that included Ben Crenshaw, the 61-year-old former Masters champion who is old enough to be Guan's grandfather.

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