Question:  Vítor Vianna is a Brazilian mixed martial artist, who has competed in mixed martial arts events in Brazil, Holland, and in the United States, this ranking is due to certain fights, of which type, that he has participated in which term used in combat sports such as boxing and mixed martial arts to describe a weight limit for odd class fights?
Context: Guy Mezger (born January 1, 1968) is an American martial artist, who competed in professional combat sports including full contact karate, kickboxing, and boxing, but is most recognized as a mixed martial arts (MMA) fighter.  Mezger retired from professional competition on January 25, 2005.  He is associated with Lion's Den and runs their school in Dallas.  Mezger was a champion in mixed martial arts in two different promotions, the UFC and Pancrase.  He holds wins over Tito Ortiz, Masakatsu Funaki, Yuki Kondo, Semmy Schilt, and Minoru Suzuki. Dream.7: Feather Weight Grandprix 2009 1st Round was a mixed martial arts event promoted by Fighting and Entertainment Group's (FEG) mixed martial arts promotion Dream on March 8, 2009.  This event featured six of the opening round fights of the tournament which is contested at a 63 kg weight limit. A catchweight is a term used in combat sports such as boxing and mixed martial arts to describe a weight limit for a fight that does not fall in line with the traditional limits for weight classes.  In boxing, a catchweight is negotiated prior to the weigh-ins, which are conducted a day before the fight. Mohammed Shahid (born July 8, 1989) is an entrepreneur and a mixed martial artist from Bahrain.  He is the CEO of KHK MMA and the President of the Bahrain based mixed martial arts organisation, Brave Combat Federation owned and supported by His Highness Sheikh Khalid bin Hamad Al Khalifa.  Mohammed Shahid was the first mixed martial artist from Bahrain to compete in global MMA events.  He was assigned a managerial role to develop mixed martial arts in Bahrain as the CEO of KHK MMA.  Bahrain established a national team alongside bringing global talent to facilitate the growth of MMA in Bahrain. Wallid Farid Ismail (born February 23, 1968) is a Brazilian mixed martial artist and promoter.  Ismail holds a black belt in Brazilian jiu-jitsu (BJJ) under Carlson Gracie, and is an IVC mixed martial arts world champion and BJJ Champion.  In mixed martial arts, Ismail also competed for the UFC, and PRIDE, and most of wins in the sport came by way of submission. Vítor Vianna is a Brazilian mixed martial artist, who has competed in mixed martial arts events in Brazil, Holland, and in the United States.  He is the #3 ranked Middleweight prospect in the world.  He is also ranked as the #69 Light Heavyweight fighter in the world by FightMatrix.com.  This ranking is due to certain Catchweight fights he has participated in.  He is also a highly decorated Brazilian Jiu-Jitsu competitor and is a; 2 time World Champion, 6 time Brazilian National Champion, 15 time State Champion, and ADCC NO GI Brazilian trials runner-up.  Vianna is signed to the Bellator Fighting Championships. Mariusz Ryszard Linke (born July 31, 1969) is a Polish professional mixed martial artist and grappler who is most notable for being the first Polish born black belt in Brazilian jiu-jitsu, the highest ranking active Polish judoka and BJJ practitioner in both mixed martial arts and grappling, and one of the most decorated grapplers in Poland, he is also the first Polish grappler to travel to Brazil and receive training under a Gracie trained Brazilian jiu-jitsu black belt.  Linke has notably competed in the European Championship, NAGA, Grapplers Quest, ADCC and the Pan American Games.  Linke is currently in talks with top Polish promotion Konfrontacja Sztuk Walki to negotiate a 2 fight contract to close out his mixed martial arts career by the end of 2015, Linke has stated despite retiring from fighting he will still continue his grappling career and is rumored to be in the 2014 ADCC Polish Trials to enter the 2015 ADCC World Championship. Mixed martial arts (MMA) is a full-contact combat sport that allows both striking and grappling, both standing and on the ground, using techniques from other combat sports and martial arts.  The first documented use of the term "mixed martial arts" was in a review of UFC 1 by television critic Howard Rosenberg in 1993.  The term gained popularity when newfullcontact.com, then one of the largest websites covering the sport, hosted and republished the article.  The question of who actually coined the term is subject to debate. Lee Hasdell (born 13 December 1966) is a British martial artist, promoter and former professional kickboxer and mixed martial artist.  Hasdell is considered by many as a true pioneer of UK mixed martial arts, as he was the main driving force and innovator in the 1990s.  Hasdell promoted the first professional Mixed martial arts events in the United Kingdom and has helped develop many of the standards within the British MMA scene of today. Pound for pound is a ranking used in combat sports, such as boxing or mixed martial arts, of who the better fighters are relative to their weight (i.e., adjusted to compensate for weight class).  As these fighters do not compete directly, judging the best fighter pound for pound is subjective, and ratings vary.  They may be based on a range of criteria including "quality of opposition", factors such as how exciting the fighter is or how famous they are, or be an attempt to determine who would win if all those ranked were the same size.  In boxing, the term was historically associated with fighters such as Benny Leonard and Sugar Ray Robinson who were widely considered to be the most skilled fighters of their day, to distinguish them from the generally more popular (and better compensated) heavyweight champions.  Since 1990, "The Ring" magazine has maintained a pound for pound rank of fighters.  ESPN.com has a list for mixed martial artists.  In December 2013, Ronda Rousey became the first woman to appear on the top 10 of a mixed-gender major publication.
Answer: Catchweight