Spieth needs to find "explosive" best at PGA to join McIlroy in grand slam club

Double US Open champion Curtis Strange offers some Quail Hollow advice as Spieth attempts to follow Masters champion in joining golf's most exclusive club.

NOT THROWING IN TOWEL: Jordan Spieth of the United States. Pic: Mike Mulholland/Getty Images)

Jordan Spieth will need to harness his "explosive" game to win the US PGA Championship and become the seventh player to complete a career grand slam.

That is the view of double US Open champion Curtis Strange, who will be commentating for ESPN at Quail Hollow as Spieth attempts to follow Masters champion Rory McIlroy in joining golf's most exclusive club.