Height: 6 ft 1 in (1.85 m)
Weight: 195 lb (88 kg; 13.9 st)
Birthdate: October 18, 1965
College: University of Oklahoma
Year turned pro: 1987
Birthplace: Galesburg, Illinois, USA
Hamilton was actually born William Todd Hamilton, in Galesburg, Illinois, in 1965. He was raised in the town of Oquawka in Henderson County. For high school, Hamilton attended Union High School in Biggsville, Illinois. After high school, Hamilton played collegiate golf while attending the University of Oklahoma.
After turning professional in 1987, Hamilton found that he could not immediately secure a place to play on the PGA Tour. Instead he decided to play outside of the US and spent most of his time competing on the Japan Golf Tour. When he finally finished playing on the Japan Tour he was the highest non-Japanese money winner there had ever been on the tour, having achieved eleven wins.
Hamilton was 38 years old when he finally finished high enough at qualifying school in 2003 to secure a card to play on the PGA Tour the following year. Hamilton achieved his first win on the PGA Tour during his first year, at the 2004 Honda Classic. That was to be the first success of a very successful year for Hamilton, in which he caused a major upset by winning the Open Championship in a play-off against Ernie Els. Unsurprisingly, Hamilton was named PGA Tour Rookie of the Year for 2004. Although Hamilton played well throughout the 2004 season, his level of form then began to drop, and in 2010 he lost his full exempt status on the PGA Tour. As a result he began playing on the Web.com Tour as bridge to him being able to play on the Champions Tour from October 2015.
As of the end of 2014, Hamilton had achieved two wins on the PGA Tour, amassing total prize money of $5,521,259.