U.S. Open: Rory McIlroy, eyeing first major win in almost a decade, one shot back headed into Sunday

Never forget: The time Gerry McIlroy bet big—and won—on his own son

This little-known formula is the secret to Rory McIlroy's signature shot

Mesmerizing side-by-side shot tracer clip shows Rory's normal swing vs. his low 'bullet'