Watch Rory McIlroy smack first shot at US PGA into 'alligator-infested' water

Rory McIlroy hit his longest drive of the year and it was an absolute beast

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

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

Rory McIlroy | Swing Theory | Driver, iron, wedge