Do not confuse this with the seriously inconvenient condition known to the world as buck teeth (without which we would have no orthodontists, and no mortified adolescents with mouthfuls of rubber bands and wire braces).
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.