On May 21, 2005, in Stockholm Sweden, Bregy beat all three opponents Pavel Majer, Denis Grigoriev and Gary Turner and won his first K-1 tournament title.

In 2006 Bregy continued his strong performance in K-1 World GP in Amsterdam, winning the tournament by three consecutive KO's over Freddy Kemayo, Naoufal Benazzouz and Gokhan Saki and qualified himself for K-1 World GP Final Elimination 2006 in Osaka, Japan

2007 runner up K1 World GP Amsterdam