Sergei Gur entered K-1 in 2001, following the footsteps of his training partner Alexey Ignashov.
He won his first tournament on April 21 in Milan, Italy, by three consecutive TKO's over Danilo Capuzi, Franz Haller and Rani Berbachi.
On his next fight he was matched up against three time K-1 World champion Ernesto Hoost in K-1 Oceanian preliminarily held in Melbourne, Australia.
The win qualified him for K-1 World GP The Battle of Bellagio III, held in Las Vegas, Nevada.
Gur lost a hard-fought battle in quarter finals against Mighty Mo by unanimous decision.