A pro fighter faces the most difficult decision of his life when contemplating the prospect of retirement. Unfortunately, too many hang on well past the time when they can compete at the highest level only serving to diminish their legacy and damage their health. MMA is no different than boxing in this respect, and following his brutal knockout loss to Melvin Manhoef at DREAM 4 Japan's legendary Kazushi Sakuraba appears to fit the description of a fighter who needs to call it quits but is unwilling to do so.

A pro fighter faces the most difficult decision of his life when contemplating the prospect of retirement. Unfortunately, too many hang on well past the time when they can compete at the highest level only serving to diminish their legacy and damage their health. MMA is no different than boxing in this respect, and following his brutal knockout loss to Melvin Manhoef at DREAM 4 Japan's legendary Kazushi Sakuraba appears to fit the description of a fighter who needs to call it quits but is unwilling to do so.

Despite the recent explosion in the sports popularity, the United States MMA scene doesn't really have anyone of comparable status to Sakuraba in Japan. Hes credited for helping the nascent sport of mixed martial arts emerge from Japanese professional wrestling as well as for making MMA a major league sport in Japan. Sakuraba is also considered by many to be pound for pound the greatest Japanese MMA fighter ever, with some suggesting that he transcends the national qualifier and should be regarded as the pound for pound best fighter in the brief history of the sport. A legendary series of matches against various members of the Gracie family further elevated the status of MMA in Japan and in the process made Sakuraba a superstar. In particular the 90 minute long battle against Royce Gracie at PRIDE's 2000 Grand Prix tournament is frequently cited as the greatest match in MMA history. Hes also considered the best box office draw in Japanese fight sports of the past decade, which is part of the reason that hes been persuaded to stick around longer than he should have. Hes not only Japans greatest MMA fighter, but one that still sells tickets.

While Sakruaba's record in the sport is certainly worthy of this acclaim, the reality is that he hasn't defeated a credible opponent of any sort since his 2003 win over Kevin Randleman. At this point, he's doing nothing to enhance his legacy and is putting it at risk by continuing his career well past his competitive prime.

Sakuraba is not only 38 years old, but he's what fight experts consider an 'old 38' based on the number of grueling, physically and emotionally draining battles he's competed in. His 90 minute classic with Royce Gracie alone took a toll that some suggest that Sakuraba has never recovered from. Despite this, he continued to face the best opponents in the world after that fight.

Furthermore he'd frequently find himself across the ring from much larger superstars, his popularity and fearlessness producing matchups that could never get sanctioned in the US but are commonplace in the wild wild west environment of Japanese fighting. The quality of opposition he faced is staggering"Royce Gracie and several other members of the legendary family, Wanderlei Silva, Mirko Cro Cop, Vitor Belfort, and Antonio Rodrigo Nogueira stand out as the most impressive names on his record. Unfortunately and not surprisingly, he had difficulty when stepping up in class against heavier fighters and most of these matchups resulted in losses by brutal knockout or other type of stoppage.

Sakuraba has been less active in the past couple of years, but has shown little indication that he'll formally retire. Hopefully this decision won't undermine his legacy or more importantly negatively impact his long term mental and physical health.