In May 2003, Wiggins made his Grand Tour debut at the Giro d'Italia. On the 18th stage he was eliminated from the race, finishing outside of the time limit in a group of 53 riders. In the summer he competed in the track world championships in Stuttgart, qualifying fastest in the individual pursuit, before beating Russia's Alexei Markov in the first round, setting up a place in the final against Australia's Luke Roberts. He beat Roberts by 0.736 seconds to win the gold medal, his first senior world title. He also came away with a silver medal in the team pursuit, beaten by Australia in the final, who broke their own world record with a time of three minutes and 57.280 seconds. In September he won stage one of the Tour de l'Avenir, beating teammate Benoît Vaugrenard and 's Joost Posthuma by 14 seconds. In November he won the Six Days of Ghent with Matthew Gilmore of .