As an amateur, he competed in the men's heavyweight division at the 2014 Commonwealth Games in Glasgow where he won the silver medal against Canada's Samir El-Mais.

[1] Professionally, Light is a former WBO World Crusierweight title contender, where he fought Lawrence Okolie in March 2023.

David is the youngest of eight children to New Zealand inventor Len Light who invented the world's first do-it-yourself yoghurt maker,[2] founding the then family business of Easiyo in 1992[3] and later of New Zealand Pure Dairy Ltd.[4] David had reached the semifinal after knocking out Malaysia's Meeraj Omar in the second round of his first bout, before defeating Kenya's Charles Odhiambo Okoth in a unanimous decision.

[5] Light joined fellow boxer, David Nyika, in bringing home rare Commonwealth Games boxing medals to New Zealand.

[citation needed] Following his Commonwealth success, Light was full of admiration for the Kiwi team but made controversial remarks regarding professional boxing: "... us boys in the New Zealand team, we always joke that going pro is when you give up on actual boxing ... You're cashing in on your talent and you're fighting bums.

"[6] Other successes for Light in 2014 include placing 2nd in his events at the 2014 boxing tournaments held in Belgrade, Serbia and 3rd at the 2014 GeeBee Competitions.

The following month, Light took on another Fijian boxer Savenaca Naliva for the WBF International Cruiserweight title.

In December 2022, Light would return to Florida to take on Brandon Glanton in a WBO World title eliminator.

[30][31] Light won the fight by a close Split Decision with the world title shot expected to happen in March or April 2023.

WBO stated if an agreement does not reach, the purse bid would be held on 22 December in Puerto Rico.