Melbourne - Unbeaten American Devin Haney comfortably beat Australian George Kambosos on points Sunday to become the first undisputed lightweight world champion in modern boxing history.
Highly-rated WBC title holder Haney, a clear favourite, successfully defended his belt for a fifth time and in the process took the WBA, IBF and WBO straps off Kambosos with a unanimous verdict.
Victory made him the first undisputed lightweight champion since Pernell Whitaker in 1992 and the first in the four-belt era, which began in 2004.
Kambosos was undone by Haney's sensational speed, instinct and relentless left jab that frustrated the Australian who struggled to land enough big blows.
It was a defensive masterclass by the American, whose slick skills and smart tactical nous won the day in front of a 41,000-strong pro-Kambosos crowd at an electric Marvel Stadium in Melbourne.