At the age of 24, he finished second in the WSOP 02 becoming the youngest player ever to win $1 million in a poker tournament. Gardner also finished in the money at the main event in 2003 and 2004, making him the only player to finish in the money in 2002, 2003 and 2004. Gardner also made appearances on the Late Night Poker television series. He was also a member of the winning British team in the Poker Nations Cup. He is the co-author of the book The Secrets of Online Power Poker. As of 2006, his total live tournament winnings exceed $2,000,000.