Spieth has not been at the height of his powers for years, but an improved all-around game and welcoming Quail Hollow Club set up nicely for history to be made

Spieth enters Quail Hollow in a different mindset as he tries to match Rory McIlroy’s historic feat at the Masters.

Jordan Spieth has not lost sleep over his bid to complete the career Grand Slam at this week's PGA Championship and said on Tuesday that watching Rory McIlroy accomplish the feat at last month's Masters has inspired him.