Roman Kollar had the following finishes at major championships – 1999 World Championship: 54.0 kg. Freestyle (19th); 2001 World Championship: 54.0 kg. Freestyle (21st); 1995 World Championship: 52.0 kg. Freestyle (22nd); 2005 World Championship: 55.0 kg. Freestyle (24th); 1994 European Championship: 52.0 kg. Freestyle (6th); 1996 European Championship: 52.0 kg. Freestyle (8th); 2002 European Championship: 55.0 kg. Freestyle (9th); 1993 European Championship: 48.0 kg. Freestyle (10th); 1998 European Championship: 54.0 kg. Freestyle (11th); 1995 European Championship: 52.0 kg. Freestyle (12th); 2000 European Championship: 54.0 kg. Freestyle (12th).
