Manny Pacquiao's decorated boxing career has come to an end, the sport's only eight-division world champion announcing his retirement.

Pacquiao called time on his career inside the ring a month after his unanimous decision loss to Yordenis Ugas for the WBA super welterweight title.

The 42-year-old had made his boxing return against Ugas for the first time since July 2019, but the Filipino great's comeback did not go according to plan in Las Vegas.

Pacquiao, who has declared his candidacy in the 2022 Philippine presidential election, retires with a record of 62 wins (39 knockouts), eight losses and two draws.

Regarded as one of the greatest boxers of all time, Pacquiao – the first fighter to win major world titles in four of the eight glamour divisions; flyweight, featherweight, lightweight and welterweight – is the only boxer to hold world championships across four decades in the 1990s, 2000s, 2010s and 2020s.

"It is difficult for me to accept that my time as a boxer is over. Today, I am announcing my retirement," Pacquiao said in a video on his Facebook page, having scored wins over the likes of Oscar De La Hoya, Ricky Hatton and Miguel Cotto during his storied career.

"Wow... I never thought that this day would come. As I hang up my boxing gloves, I would like to thank the whole world especially the Filipino people, for supporting Manny Pacquiao."

Pacquiao, who made his professional debut aged 16, said: "You gave me the chance to fight our way out of poverty. Because of you, I was able to inspire people all over the world. Because of you, I have been given the courage to change more lives. I will never forget what I have done and accomplished in my life, I can't imagine.

"I just heard the final bell. Tapos na ang boksing [boxing is done]. Maraming, maraming salamat po [thank you very much]. God is good all the time.

"I was given the opportunity of representing the Philippines, bringing fame and honour to my country every time I entered the ring. I am grateful for all my accomplishments and the opportunity to inspire the fans."