Height: 6 ft. 2 in
Weight: 180 lbs
College: Baylor University
Turned Pro: 2001
Birthplace: Oklahoma City, Oklahoma
Country: United States
After graduating from Baylor University in 2001, Walker turned pro. Walker got his Nationwide Tour card for the 2003 season when he finished 31st on the money list (top 30 gains a PGA Tour card). He finished 1st in the standings the following season on the Nationwide Tour. He won twice and had two runner-up finishes on his way to winning the money title. He gained his first ever PGA Tour card for the 2005 season.
Walker only managed to play nine events in his rookie season due to injury. After obtaining a medical exemption, Walker played in twenty one events the following season. He finished 202nd on the money list after only having a single top 25 finish. After returning to the Nationwide Tour in 2007, Walker regained his Tour card after finishing 25th in the standings including one victory. Walker lost his PGA Tour card again the following season but regained it after a visit to Q School.
Walker had a breakout year in 2011 when he registered four top 10 finishes and ending the season 67th in the standings. The 2013 season brought a best ever finish on the PGA Tour when he finished runner-up at the Greenbrier Classic. He had a further four top 10s that season and ended the year 30th on the money list.
Walker captured his first Tour win at the beginning of the 2014 season at his first event of the season, the Frys.com Open. He proceeded to win twice more that season, at the Sony Open in Hawaii and the AT&T Pebble Beach National Pro-Am. He had a total of ten top 10s in 2014 and finished a career high 4th on the money list. He made his debut at the Ryder Cup that year when he represented the United States in Gleneagles. Walker lost in a play-off at his first event of the 2015 season; he lost to Patrick Reed at the Hyundai Tournament of Champions. He successfully defended the Sony Open the following week. Walker claimed his fifth Tour win at the Valero Texas Open.