I've been doing an interesting thought-exercise: trying to ascertain the greatest/most accomplished fighter from the NHB era, which I have (arbitrarily and problematically) defined as ending on 31st December 2000. Of course this isn't perfect, but that date is helpful. Most of the leading fighters from the first era of MMA had the bouts upon which their legacies depend before that date. So, even though many of those below continued to compete afterwards (Sakuraba, Coleman, Severn, etc), or retired and then came back (Frank Shamrock, Ken Shamrock) their key, legacy-defining achievements almost all came prior to 31st December 2000. So I think that is the best cut-off date for the purposes of this exercise. In ranking the fighters I tried to balance factors such as accomplishments (winning major fights, winning one-night tournaments etc.), strength of competition, the fact that weight classes were of negligible importance, the sheer size of some bodies of work (fights occurred far more frequently in those days), etc. I have also focused purely on the body of work in this period. Thus, fights that occurred afterwards are not taken in account. Likewise, someone like Rickson might well be the greatest BJJ player of all time, but his body of work in MMA/NHB is quite small. In some places I have ranked fighter A higher than B, even though B beat A - this is usually based on the size of the overall body of work and the number of wins achieved at a time when the sport was shifting constantly, it was impossible to scout opponents, new tactics/techniques were constantly being developed, fights frequently ended due to fatigue, and so on. I'd be grateful for anyone's thoughts on the list below. I was very, very surprised by the fighter that came out at number one. The list is very provisional and is more of a thought-exercise. I'm aware that it is perhaps eccentric.  Igor Vovchanchyn  Kazushi Sakuraba  Frank Shamrock  Bas Rutten  Dan Severn  Ken Shamrock  Masakatsu Funaki  Royce Gracie  Mark Coleman  Don Frye  Rickson Gracie  Mark Kerr Before Rickson fans have a nuclear meltdown, please note that I am NOT saying that all, or many, of those fighters ranked above him would defeat him. What I am suggesting is simply that their MMA body of work is of better quality/of greater significance than his. Looking at Igor's body of work https://en.wikipedia.org/wiki/Igor_Vovchanchyn and his incredible run between 1995 and the end of 2000, I was forced to conclude that he was the most accomplished. He fought a HUGE number of fights and won. Importantly, he is probably the most successful tournament fighter in MMA history, which in the NHB era counts for a great deal. I think that he competed in twelve one-night tournaments and won nine of them. He reached the finals in every tournament. In addition Igor was a terrifying striker and hit very hard indeed (incidentally he had a kickboxing record of 61-2, which underpinned his abilities with his fists). Hence I had to reluctantly give him the nod over Sakuraba. For those wondering, the sheer size of Severn's resume in this period was a reason why I ranked him quite a lot higher than I initially expected to: https://en.wikipedia.org/wiki/Dan_Severn Comments/criticisms greatly appreciated!