In May 2005, he won the first prize of $1,128,278 in the World Poker Tour Mirage Poker Showdown in Las Vegas, defeating Ted Forrest in the final heads-up confrontation. In October 2005 he made the WPT final table again in the 2nd Annual Doyle Brunson North American Poker Championship, where he finished third, behind Minh Ly and Dan Harrington. He made a third WPT final table in January 2006, finishing fourth. The three WPT final tables earned him the World Poker Tour Player of the Year award for Season 4.
He first cashed in the World Series of Poker in 2003 and would later cash in the $10,000 no limit hold'em main event in 2004, finishing 52nd. He went on to cash in 2005 also, as well as in 2007. Smith boasted several other high finishes, including a runner-up finish in 2007. The experience Smith gained in mixed-games when he started playing also served him well, as he had several high finishes in H.O.R.S.E. tournaments. Smith earned his first World Series of Poker bracelet in the $2,500 Mixed Hold'em event at the 2010 World Series of Poker, defeating Danny Hannawa heads-up, and earning $268,238 for his 1st-place finish.
He won the Big August Rec.Gambling Excursion Main Event in 2004, besting a strong field of 249 poker enthusiasts, in Las Vegas, Nevada. In July 2006, Smith won the World Pro-Am Challenge event at the Poker Dome Challenge, taking home the $500,000 first prize. From April 2006 until October 2006, Gavin was one of the hosts of The Circuit radio show sponsored by Card Player magazine. Beginning in 2007, Smith and Joe Sebok co-hosted PokerRoad Radio with Joe Stapleton. Smith's final episode as a co-host on PokerRoad Radio was July 12, 2010. He won Poker After Dark´s Season 3 Week 2 "19th Hole", defeating Phil Ivey in heads-up play. It was his first time on the show. Smith played online poker on several sites and played under the alias "Birdguts", as well as his own name on Full Tilt Poker, where he played as one of their Full Tilt Pros. Smith was good friends with Erick Lindgren, who helped bankroll him early in his career. His lifetime live tournament winnings exceeded $6,321,000. His 47 cashes as the WSOP accounted for $1,673,208 of those winnings.
Prop bets
Smith co-starred with Joe Sebok on a show called "Prop Bets" on the Internet-TV site RawVegas.tv, mainly thanks to the above-mentioned prop bet at the 2006 World Series of Poker. Smith won a bet with Joe Sebok on who would win the most Card Player magazine points at the 2006 World Series of Poker. As a consequence, Sebok had to wear a bear outfit on Day 1B, among other funny-looking outfits, including Wonder Woman. Smith had a tattoo on his upper right shoulder of a four-leaf clover and the initials J.S. He had to get the tattoo after losing a prop bet to Joe Sebok.
Death
Smith died on January 14, 2019 at his home in Houston, Texas at the age of 50. His death was ruled natural.
