Manny Pacquiao will end his retirement at 46 to challenge Mario Barrios for the WBC welterweight title July 19 in Las Vegas, sources confirmed to The Ring.

The legendary boxer will return to the ring nearly four years after his supposed final fight when he dropped a decision to Yordenis Ugas.

Pacquiao is one of the sport's all-time greatest fighters. He’s the only boxer to win titles in eight divisions, capturing them from 108 to 154 pounds.

But his last time in the ring was a December 2022 exhibition in South Korea where he looked far from the dynamo that took the ring by storm.

Pacquiao (62-8-2, 39 KOs) has retired several times before only to return to the ring. His last victory — and great performance — was a July 2019 decision over Keith Thurman.

Pacquiao will attempt to become the second oldest champion in history, surpassing even the late George Foreman who shocked the world when he KO'd Michael Moorer to win the heavyweight crown in 1994.

Pacquiao is the fourth-oldest fighter to win a title, doing so when he defeated Thurman. Bernard Hopkins holds the record at 49.

Barrios, who turns 30 later this month, will enjoy a 16-year age advantage. The Texan is The Ring’s No. 3 boxer at 147 pounds.

Barrios (29-2-1, 18 KOs) is coming off a surprising draw with Abel Ramos in November, a fight where they traded knockdowns. Barrios’ losses came to Gervonta Davis and Thurman.

The fight has been in the works for nearly a year.

“I made history at 40 beating Keith Thurman and I feel at 45, I have a lot left in the game as I haven’t taken a lot of punishment over the last few years,” Pacquiao told this reporter in June. "I want to go out making history.”

Barrios said at the time: “I'm very excited at the possibility of this fight being made. Manny Pacquiao is a future Hall of Famer, a legend and someone I looked up to growing up. To share the ring with him would be an honor and a dream come true."

The Sebastian Fundora-Tim Tszyu junior middleweight title rematch will serve as the PPV chief support bout, sources said. Fundora upset Tszyu in March 2024 in one of that year’s best action fights.

Isaac “Pitbull” Cruz will return on the undercard, per sources, and one possibility is a rematch with Angel Fierro, whom he defeated in a February slugfest.