1) Chuck Liddell - Along with Randy Couture and Tito Ortiz, Chuck Liddell is considered one of the pioneers of the modern day UFC.
His looping right hand instilled fear in every fighter it came across.
As UFC champion, Liddell put forth four successful defenses before falling to Quinton "Rampage" Jackson in May 2007. On July 10, 2009, "The Iceman" was inducted into the UFC Hall of Fame.
2) Mauricio Rua - Some may be surprised by Mauricio "Shogun" Rua's placement on this list, but years of living in Wanderlei Silva's shadow shouldn't trump Rua's incredible accomplishments. He never wore Pride gold because he simply chose not to fight Silva, who he considers his second brother. Would a prime Rua defeat a prime Silva? We'll never know the answer to that question. Thankfully, Rua got his chance in the spotlight as a world champion after defeating unbeaten Karate specialist Lyoto Machida.
3) Tito Ortiz - There has never been a more controversial figure in the sport than Tito Ortiz. Some have chosen to vilify him for past bad boy antics, but there's no denying Ortiz's legacy. When he hangs up his gloves, he will go down in the history books as an all-time great. He still holds the record for most UFC light heavyweight title defenses (5).
4) Wanderlei Silva - Throughout his career, Wanderlei Silva has fought with the intent of finishing or being finished, which has left fans with some of the most memorable knockouts in MMA history. He was the Pride middleweight champion from 2001-2007, and he holds the record in the organization for most wins (22) and knockouts (15).
5) Quinton Jackson - The first man to unify the UFC and Pride light heavyweight titles, Quinton "Rampage" Jackson has left an everlasting mark on the sport with his engaging personality and fierce knockout power. Who could ever forget Jackson hoisting Ricardo Arona high into the air and driving him through the mat with a power bomb?
6) Dan Henderson - It's hard to rank a guy like Dan Henderson, who has shifted between three different weight classes throughout his career. His fighting spirit knows no limits, and he's always willing to test himself by attempting to conquer the "impossible." Overall, Henderson is without a doubt one of the greatest fighters of all time.
7) Lyoto Machida - Lyoto Machida has prided himself on being the most elusive fighter in UFC history. His unique style of Karate may be the base of his world class skill set, but a high I.Q. and deep knowledge of multiple aspects of fighting has vaulted him into the all-time light heavyweight rankings.
8) Antonio Rogerio Nogueira - The twin brother of Rodrigo Nogueira, Antonio Rogerio Nogueira has crafted a legacy of his own. In his 10-year career, he has defeated a wealth of upper-echelon talent to add to the lengthy list of accomplishments of the great Nogueira name.
9) Frank Shamrock - One of the legendary icons of the sport, Frank Shamrock was the very first UFC light heavyweight champion. After holding onto the title for an incredible 703-days, he relinquished his throne and retired in 1999. He later returned to give fans a few more fights and tutor the younger generation on what it takes to be a world champion.
10A) Vitor Belfort - Along with a strong grappling background and world class boxing skills, Vitor Belfort has some of the fastest hands in MMA history. When people tell you not to blink during a Belfort fight, you should definitely heed those words.
10B) Forrest Griffin - There is no way the light heavyweight list can be completed without Forrest Griffin. His contributions to the sport are invaluable. Outside of being a former champion and defeating world class names, the sport could be in a much different place if not for "The Ultimate Fighter" and Griffin versus Stephan Bonnar in the finale.