Smith's first major tournament success came during the 2007 Full Tilt Online Poker Series, where he tied for 1st in the $1.5 Million Guarantee, good for $175,326. As of year end 2011 he has amassed just over two million dollars in tournament winnings, including 5 cashes in the 2009 World Series of Poker (WSOP), and a 3rd place finish at the 2009 WPT Bellagio Cup V Championship. Justin accomplished a remarkable feat by final tabling the 2010 WPT Bellagio Cup VI with a 2nd place finish for $594,755 after busting out Phil Ivey in 3rd place. He followed that up shortly after in 2010 with a WPT High Roller Title win in London for a £141,000 score. In 2011 he had a 4th place finish at the 2011 Doyle Brunson Five Diamond World Poker Classic $100,000 buy-in Super High Roller Event worth $289,440. At the 2012 World Series of Poker, he played in the much hyped $1 Million Buy-in "One Drop Foundation" Tournament featuring 48 of the top pros competing against some of the wealthiest men in the world. 1st place in the tournament would also receive over $18,000,000. Justin was unsuccessful as the first person knocked out of the tournament with a straight against a flush facing a French businessman. Smith appeared on the cover of Bluff Magazine's 2010 October issue as well as the cover of the January 2011 issue of WPT Magazine.