As golf travels to its 'Home' for 150th Open, it's played against the backdrop of its biggest threat

Golf has come a long way since Willie Park Senior and Old Tom Morris, in a field of just eight players, competed in the first Open in 1860 at Prestwick.

Long gone are the days of men playing in suits and using wooden clubs in a sport that has since transitioned into a multi-billion-dollar business.

However, as the sport's oldest tournament travels to the 'home of golf' -- St. Andrews, Scotland -- for its 150th edition, the traditional foundations face their biggest threat for over half a century.