Spieth has 11 PGA Tour wins and three major titles. He's the youngest player ever to reach both milestones.
At 24, he's already earned more than $36 million in his PGA Tour career. That's more than several of his top contemporaries, including Rickie Fowler and Luke Donald.
Spieth jump-started his career with a hole-out to force sudden death at the 2013 John Deere Classic. He went on to win the event.
Spieth has been endorsed by Under Armour from the beginning of his pro career, signing with them when he was 19. They later tore up his original deal and gave him a 10-year extension in 2015.
The Texan has become one of the top fan draws on the PGA Tour. His bobbleheads are always a popular giveaway at the AT&T Byron Nelson.
Spieth reached the game's elite level with his win at the 2015 Masters. Two months later, he took the US Open.
At the Masters, Spieth is willing to spend extra for any advantage he can get, and that includes renting two houses, with one just for sleeping and quiet time.
Spieth isn't just known for his big wins. He authored one of the worst Masters collapses in history in 2016, hitting a pair of balls into the water on the 12th hole.
Spieth recently got engaged to his high school sweetheart, Annie Verret, a Texas Tech graduate.
Source: Golf.com
Spieth says his sister, Ellie, who has special needs, is his hero, and he brings her souvenirs from the place he visits.
Source: PGA