Welterweight

Welterweight is a weight class division in combat sports. Originally the term "welterweight" was used only in boxing, but other combat sports like kickboxing, taekwondo and mixed martial arts also began to use it for their own weight division system. In most sports that use it, welterweight is heavier than lightweight but lighter than middleweight.

Professional boxing

A welterweight boxer weighs in greater than 140 pounds (63.5 kilos), but not greater than 147 pounds (66.7kilos).

Henry Armstrong holds the division record for most title defenses at 18. Freddie Cochran was the longest reigning champion, holding the title four years, six months, and three days (although José Nápoles comes in a close second at four years, six months, and two days). Sugar Ray Robinson is generally considered to be the greatest welterweight of all time.

Barney Ross

Notable fighters who have fought as welterweights include Barney Ross, Jackie Fields, Johar Abu Lashin, Ted "Kid" Lewis, Jimmy McLarnin, Jack Britton, Henry Armstrong, Fritzie Zivic, Sugar Ray Robinson, Kid Gavilan, Carmen Basilio, Emile Griffith, José Nápoles, Sugar Ray Leonard, Thomas Hearns, Roberto Durán, Julio César Chávez, Pernell Whitaker, Félix Trinidad, Oscar De La Hoya, Ike Quartey, Shane Mosley, Vernon Forrest, Zab Judah, Floyd Mayweather Jr., Ricky Hatton, Arturo Gatti, Joshua Clottey, Miguel Cotto and Manny Pacquiao.

Source : www.wikipedia.org