Fans cheer on the 16th green during the first round of the Phoenix Open. The tournament's notoriously rambunctious 162-yard, Par-3 16th green, dubbed the "Rowdiest Hole in Golf", is completely engulfed by skyboxes and bleachers that can hold up to 20,000 fans.

Fans cheer on the 16th green during the first round of the Phoenix Open. The tournament's notoriously rambunctious 162-yard, Par-3 16th green, dubbed the "Rowdiest Hole in Golf", is completely engulfed by skyboxes and bleachers that can hold up to 20,000 fans.