Just before the turn of the century, Campbell won 13 tournaments at the three-tier NGA Hooters tour. In 2001, he was on the second-tier Nationwide Tour (formerly known as the Buy.com Tour), where he won three tournaments –and earned his way to the PGA Tour half way through the season. In 2003 Campbell, arguably, reached the pinnacle of his career – he won the Tour Championship and was the runner-up at the PGA Championship. Many eyebrows were raised at Campbell’s performance- he claimed his second PGA Tour win 2004. In the same year, Campbell was in the top ten of the Official World Golf Rankings. 2006 was also a strong year for the golfer, as he won the Bob Hope Chrysler Classic and, for the first time, he topped the money list during the season. The following year, Campbell claimed his fourth PGA win at the 2007 Viking Classic. At the 2009 Masters Tournament, Campbell holds the best starts in such a prestigious tournament.