Jordan Spieth is now the No. 1 golfer in the world

PGA Championship Round 4 in 42 Seconds

Jordan Spieth's quest for a third major in a single calendar year came to an end on Sunday. Despite playing brilliantly and finishing the tournament at -17, Spieth couldn't catch Jason Day who won the tournament with a score of -20.

Still, Spieth won on the big day by moving up the world rankings and becoming the No. 1 ranked golfer in the world, passing Rory McIlroy.

He also becomes the second youngest player to top the Official World Golf Rankings.

He is the first American aside from Tiger Woods to be named the No. 1 golfer in the world since David Duval in 1999.

It wasn't the only historically significant achievement Spieth had on the weekend, he also set the record for lowest cumulative score in Majors in a calendar year.

He also dominated his competitors in the majors this year.

Aside from the two majors Spieth won, he had top five finishes in every major this year, which puts him on a short list of impressive golfers including Woods and Jack Nicklaus.

He did even better than top five, finishing top four in every major. Something only Tiger Woods and Jack Nicklaus have done aside from Spieth in 2015.

UPDATE: Spieth comments on his new world ranking.

Click through to see photos of Spieth's career:

Jordan Spieth timeline
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Jordan Spieth is now the No. 1 golfer in the world
SHEBOYGAN, WI - AUGUST 16: Jordan Spieth of the United States watches his tee shot on the fifth hole during the final round of the 2015 PGA Championship at Whistling Straits on August 16, 2015 in Sheboygan, Wisconsin. (Photo by Jamie Squire/Getty Images)

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