I looked back on some old K-1 WGP and MAX videos and it seems like they allowed the clinch/knees considerably longer in the past. Guys like Kohi would fully take advantage of the clinching. I know that elbows were never allowed because they were seen as dirty fighting and the blood from cuts not suitable for TV at that time, but were there any documented or announced reasons for the change to one-handed touch knee or are there just theories/speculation by fans? EDIT (additional comments): I'm asking because the Japanese in a large part created Kickboxing, after K-1 the Dutch (then everyone else) started adopting the 3 rounds, no elbows, no clinch brand of fighting. The Japanese basically shaped what the world views as international kickboxing today (except for American kickboxing, which developed separately from point karate + boxing) I'm also wondering why shows like Glory and It's showtime just accepted things they way they were for so many years and continue with this format too?? They don't necessarily have to make their fights like this. Do you guys think this is the optimal format? Or is it a case of not changing something that has always been or "if it doesn't seem broke, don't fix it?" These rounds and rules seemed OK for tournaments, but now I see so many single matches/superfights like this.