K-1 World Grand Prix 2001 Final was a kickboxing event promoted by the K-1. The event was held at the Tokyo Dome in Tokyo, Japan on Saturday, December 8, 2001, in front of 65,000 spectators. It was the ninth K-1 Grand Prix final, involving eight of the world's top fighters, with all bouts fought under K-1 Rules (100 kg/156-220 lbs). The eight finalists had almost all qualified by winning preliminary tournaments (with the exception of Peter Aerts who was a runner up), while two additional fighters were invited as reserve fighters in case of any injuries.

K-1 World Grand Prix 2003 Final was a kickboxing event promoted by the K-1 organization. The event was held at the Tokyo Dome in Tokyo, Japan on Saturday, December 6, 2003 in front of 67,320 spectators. It was the eleventh K-1 World Grand Prix final involving ten of the world's best fighters (two being reservists). The eight finalists had almost all qualified via preliminary events, while two additional fighters were invited as reserve fighters (for more detail on this see bulleted list below), with all bouts being fought under K-1 Rules (100 kg/156-220 lbs).

K-1 World Grand Prix 2002 Final was a kickboxing event promoted by the K-1. The event was held at the Tokyo Dome in Tokyo, Japan on Saturday, December 7, 2002 in front of 74,500 spectators. It was the tenth K-1 World Grand Prix final, involving ten of the world's top fighters (two being reservists), with all bouts fought under K-1 Rules (100 kg/156-220 lbs). The eight finalists had almost all qualified via preliminary events, while two additional fighters were invited as reserve fighters (for more detail on this see bulleted list below). In total there were ten fighters at the event, representing eight countries.

K-1 Grand Prix '99 Final Round was a martial arts event promoted by the K-1 organization. It was the seventh K-1 World Grand Prix final involving eight of the world's best fighters, with all bouts fought under K-1 Rules. The eight finalists had all qualified via elimination fights at the K-1 World Grand Prix '99 Opening Round. Also on the card was a number of 'Freshman Fights' and an 'Opening Fight' fought under a mixture of Jiu-Jitsu and K-1 Rules (various weight class) and two 'Super Fights' fought under K-1 Rules (various weight classes). In total there were twenty fighters at the event, representing eight countries.

K-1 World Grand Prix 2006 in Tokyo Final was a kickboxing promoted by the K-1. The tournament qualifiers had all qualified via elimination fights at the K-1 World Grand Prix 2006 in Osaka Opening Round. Losing fighters Musashi and Ray Sefo were invited as reserve fighters while Badr Hari and Paul Slowinski would face one another in a 'Super Fight'. Peter Aerts and Melvin Manhoef were also invited to the event as reservists. As well as tournament bouts there were also a number of 'Opening Fights' primarily involving local fighters, fought under K-1 Rules. In total there were eighteen fighters at the event, representing ten countries.

Pride 29: Fists of Fire was a mixed martial arts event held by the Pride Fighting Championships. The event took place on February 20, 2005 at Saitama Super Arena in Saitama, Japan.

Pride Total Elimination 2 was a mixed martial arts event held by Pride Fighting Championships. This event consisted of the first round of the 2004 Heavyweight Grand Prix. It took place on April 25th, 2004, at the Saitama Super Arena in Saitama, Japan.

Pride Shockwave 2004 (marketed in Japan as "Otoko Matsuri - Sadame") was a mixed martial arts event held by Pride Fighting Championships. The event took place at the Saitama Super Arena on December 31st, 2004. This event held the final bout of the 2004 Heavyweight Grand Prix because it had ended in a no contest at the Final Conflict event back in August.

The K-1 WORLD GP 2002 開幕戦 (Opening Tournament) takes place on February 24, 2002, at Saitama Super Arena in Saitama, Japan. This kickboxing event features an eight-man Heavyweight Grand Prix to kick off the 2002 season, with fighters including Peter Aerts vs. Sergei Gur, Ernesto Hoost vs. Tsuyoshi Nakasako, Mark Hunt vs. Adam Watt, and Stefan Leko vs. Jorgen Kruth. The tournament progresses through quarterfinals, semifinals, and a final to determine the opening round winner, with Peter Aerts emerging victorious over Ernesto Hoost by decision. Additional superfights include Mike Bernardo vs. Alexei Ignashov and a K-1 vs. Muay Thai bout with Kaoklai Kaennorsing. It’s the explosive start to K-1’s 2002 World Grand Prix journey, drawing 19,500 fans.