After winning the UK Under-19 Championship in 1992 and Scottish Amateur Championship in 1993, Dott turned professional in 1994. He slowly climbed the rankings, reaching the top sixteen in 2001, where he remained until 2009. Early successes included reaching the quarter-final of the 1996 Welsh Open and qualifying for the World Championship for the first time in 1997. Dott was a runner-up in the 1999 Scottish Open, the 2001 British Open, the 2004 World Championship and the 2005 Malta Cup. He scored his only competitive 147 break in the 1999 British Open.