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ST LOUIS, MO - AUGUST 12: Jordan Spieth of the United States takes a practice swing on the sixth tee during the final round of the 2018 PGA Championship at Bellerive Country Club on August 12, 2018 in St Louis, Missouri. (Photo by Stuart Franklin/Getty Images)
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ST LOUIS, MO - AUGUST 12: Jordan Spieth of the United States acknowledges the crowd on the fifth green during the final round of the 2018 PGA Championship at Bellerive Country Club on August 12, 2018 in St Louis, Missouri. (Photo by Stuart Franklin/Getty Images)
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ST LOUIS, MO - AUGUST 11: Jordan Spieth of the United States plays his shot from the 15th tee during the third round of the 2018 PGA Championship at Bellerive Country Club on August 11, 2018 in St Louis, Missouri. (Photo by Jamie Squire/Getty Images)
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ST LOUIS, MO - AUGUST 11: Jordan Spieth of the United States lines up a putt during the third round of the 2018 PGA Championship at Bellerive Country Club on August 11, 2018 in St Louis, Missouri. (Photo by Stuart Franklin/Getty Images)
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ST LOUIS, MO - AUGUST 11: Jordan Spieth of the United States plays a shot from a bunker on the sixth hole during the third round of the 2018 PGA Championship at Bellerive Country Club on August 11, 2018 in St Louis, Missouri. (Photo by Richard Heathcote/Getty Images)
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ST LOUIS, MO - AUGUST 10: Jordan Spieth of the United States plays a shot on the 18th hole during the second round of the 2018 PGA Championship at Bellerive Country Club on August 10, 2018 in St Louis, Missouri. (Photo by Richard Heathcote/Getty Images)
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ST LOUIS, MO - AUGUST 10: Jordan Spieth of the United States plays his shot from the 16th tee during the second round of the 2018 PGA Championship at Bellerive Country Club on August 10, 2018 in St Louis, Missouri. (Photo by Richard Heathcote/Getty Images)
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ST LOUIS, MO - AUGUST 10: Jordan Spieth of the United States plays a shot on the 15th hole during the second round of the 2018 PGA Championship at Bellerive Country Club on August 10, 2018 in St Louis, Missouri. (Photo by Richard Heathcote/Getty Images)
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ST LOUIS, MO - AUGUST 10: Jordan Spieth of the United States watches his shot from the 12th tee during the second round of the 2018 PGA Championship at Bellerive Country Club on August 10, 2018 in St Louis, Missouri. (Photo by Richard Heathcote/Getty Images)
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ST LOUIS, MO - AUGUST 09: Jordan Spieth of the United States plays a shot from a bunker on the ninth hole during the first round of the 2018 PGA Championship at Bellerive Country Club on August 9, 2018 in St Louis, Missouri. (Photo by Richard Heathcote/Getty Images)
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ST LOUIS, MO - AUGUST 09: Jordan Spieth of the United States plays his shot from the seventh tee during the first round of the 2018 PGA Championship at Bellerive Country Club on August 9, 2018 in St Louis, Missouri. (Photo by Richard Heathcote/Getty Images)
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ST LOUIS, MO - AUGUST 09: Jordan Spieth of the United States reacts to his putt on the fourth green during the first round of the 2018 PGA Championship at Bellerive Country Club on August 9, 2018 in St Louis, Missouri. (Photo by Richard Heathcote/Getty Images)
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ST LOUIS, MO - AUGUST 09: Jordan Spieth of the United States plays his shot from the first tee during the first round of the 2018 PGA Championship at Bellerive Country Club on August 9, 2018 in St Louis, Missouri. (Photo by Richard Heathcote/Getty Images)
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ST LOUIS, MO - AUGUST 08: A young fan holds a Wheaties box depicting Jordan Spieth of the United States during a practice round prior to the 2018 PGA Championship at Bellerive Country Club on August 8, 2018 in St Louis, Missouri. (Photo by Sam Greenwood/Getty Images)
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ST LOUIS, MO - AUGUST 08: Jordan Spieth of the United States lines up a putt during a practice round prior to the 2018 PGA Championship at Bellerive Country Club on August 8, 2018 in St Louis, Missouri. (Photo by Sam Greenwood/Getty Images)
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ST. LOUIS, MO - AUGUST 07: Jordan Spieth of the United States signs his autograph for a fan during a practice round prior to the 2018 PGA Championship at Bellerive Country Club on August 7, 2018 in St. Louis, Missouri. (Photo by Jamie Squire/Getty Images)
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ST. LOUIS, MO - AUGUST 07: : : Jordan Spieth of the United States speaks to the media during press conference prior to the 2018 PGA Championship at Bellerive Country Club on August 7, 2018 in St. Louis, Missouri. (Photo by Stuart Franklin/Getty Images)
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ST. LOUIS, MO - AUGUST 07: Jordan Spieth of the United States plays a shot from a bunker on the second hole during a practice round prior to the 2018 PGA Championship at Bellerive Country Club on August 7, 2018 in St. Louis, Missouri. (Photo by Jamie Squire/Getty Images)
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ST. LOUIS, MO - AUGUST 06: Jordan Spieth of the United States practices on the range prior to the 2018 PGA Championship at Bellerive Country Club on August 6, 2018 in St. Louis, Missouri. (Photo by Andy Lyons/Getty Images)
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ST. LOUIS, MO - AUGUST 06: Jordan Spieth of the United States plays an approach shot during a practice round prior to the 2018 PGA Championship at Bellerive Country Club on August 6, 2018 in St. Louis, Missouri. (Photo by Stuart Franklin/Getty Images)