A PGA Tour player, can use any Golf ball that is on the list of conforming golf balls, which is published by the USGA and R and A. The PGA Tour operates a one ball rule, this means if the player tees off with a Pro V 1 x on the first hole, the only ball they can use during the tournament is a Pro V 1 x, or they will be disqualified.
The Nationwide Tour would be the tour before the PGA Tour, the top 25 on the Nationwide tour at the end of the season win PGA Tour cards.
No rule against it. Although they would probably prefer it be covered.
PGA Tour on ABC was created in 1966.
PGA Tour on CBS was created in 1956.
The PGA Tour is associated with the sport of golf.
PGA Tour on USA was created in 1982.
PGA Tour of Australasia was created in 1973.
Tiger Woods PGA Tour was created in 2003.