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Welterweight (not to be confused with Walter White) is a weight class in combat sports. Originally the term "welterweight" was used only in boxing, but other combat sports like Muay Thai, taekwondo and mixed martial arts also use it for their own weight division system to classify the opponents. In most sports that use it, welterweight is heavier than lightweight but lighter than middleweight.


Professional boxing[edit]

A welterweight boxer's weight is greater than 63.5 kg (140 lb), but less than 67 kg (147 lb).[1]

Henry Armstrong holds the record for the most consecutive title defenses at this division, with 19 defenses of the lineal title.

Professional champions[edit]

Current champions

Sanctioning body Reign began Champion Record Defenses
WBA (Super) May 3, 2014 United States Floyd Mayweather, Jr. 48-0 (26 KO) 2
WBA January 16, 2015 United States Keith Thurman 26-0-0-1 (22 KO) 2
WBC September 17, 2011 United States Floyd Mayweather, Jr. 48-0 (26 KO) 4
IBF August 16, 2014 United Kingdom Kell Brook 35-0 (24 KO) 2
WBO July 6, 2015 United States Timothy Bradley 32-1-1-1 (12 KO) 0

Amateur boxing[edit]

Olympic champions[edit]

The current Olympic male welterweight division is set at 64–69 kg (141–152 lbs).[2]


The weight division system is different in each organisation, so the kickboxing weight divisions of some international organizations vary:

Mixed martial arts[edit]

Main article: Welterweight (MMA)

The welterweight limit, as defined by the Nevada State Athletic Commission[7] and the Association of Boxing Commissions[8] is 155 pounds (70.3 kg) to 170 pounds (77.1 kg).

Other sports[edit]

Other sports to include a welterweight division include the following,

  • Muay Thai has fixed its weight division similarly to boxing.
    • International Kickboxing Federation (IKF): Muay Thai Welterweight (Pro & Amateur) 142.1 lbs. - 147 lbs.(64.59 kg - 66.8 kg)
    • World Muay Thai Council (WMC), welterweight range is from 140 pounds (63.5 kg) to 147 pounds (66.6 kg)
    • World Muay Thai Federation (WMF), the official amateur organization, fixed welterweight from 63.5 to 67 kg for adult; the junior category is the same as adult
  • The official rules of shoot boxing define welterweights as between 65 and 67 kg (143.3 to 147.7 lb).
  • In Olympic taekwondo, welterweight falls between 74 and 80 kg. At the weight classes for the Olympic games it is between 68 and 80 kg.

References and notes[edit]

  1. ^ "Classes & Divisions". HolyTrinityBoxing.com. Retrieved 17 April 2013. 
  2. ^ "Classes & Divisions". HolyTrinityBoxing.com. Retrieved 17 April 2013. 
  3. ^ "IKF WEIGHT CLASSES". IKFKickboxing.com. Retrieved 20 April 2013. 
  5. ^ "WKA USA - Official Rulebook". WKAUSA.com. Retrieved 20 April 2013. 
  7. ^ "Nevada Revised Statutes: CHAPTER 467 - UNARMED COMBAT". http://www.leg.state.nv.us. Retrieved 2007-02-20. 
  8. ^ "UNIFIED RULES OF MMA". ABCBoxing.com. Retrieved 2012-07-15.