PGA Championship contestants will be allowed to wear shorts during practice rounds starting in 2017 at Quail Hollow Club.
In February, the PGA of America announced a policy change which will allow players in their championships and majors to be allowed to wear shorts before championship rounds.
This modern-thinking rule should be appealing to players who have been hoping for the PGA Tour to join the European Tour in allowing their players to wear shorts in practice rounds. The European Tour approved that change in 2016, and players took advantage by showing their gams during practice days.
However, players in PGA of America events (except the KPMG Women's PGA Championship and women's championships) and on the European Tour are still required to wear slacks in the championship rounds. So, you'll get a great view of players' calves for the Monday through Wednesday practice rounds, and then it's gametime and the gams go into hiding...in the hot, hot heat.