 As an amateur, Geudens has won the Belgian Amateur Championship twice, in 1999 and 2009, and was runner-up in that event in 1992.Born in 1975, Geudens turned professional in 1993, aged seventeen.He entered nine tournaments during his début season, his best performance coming in the 1994 World Championship, where he reached the fifth qualifying round; he lost there 10–4 to Chris Small.