Manny Pacquiao wants victory over Brandon Rios for Philippines
Manny Pacquiao promised to win Saturday's fight against Brandon Rios to lift the spirits of people in the Philippines following Typhoon Haiyan.
The death toll in Pacquiao's homeland has risen above 5,000 since the disaster earlier this month.
And he says this has given him extra motivation for the bout in Macau.
"I'm doing my best to win this fight because I lost twice last year, but also with what happened to my countrymen," Pacquiao, 34, said.
"It's not that Manny Pacquiao's plate has ever been empty. Boxing superstar, politician, singer and actor, to name just a few of the things he can put on his resume. But the man from the Philippines is fighting to give his nation, beleaguered since the terrible tragedy of Typhoon Haiyan, that simplest of messages. Hope."
"To all the people and families affected by this storm - this fight is for you."
Giant screens have been set up in the devastated city of Tacloban so Pacquiao's fans can watch the non-title welterweight fight for free.
The Philippines boxer lost his WBO welterweight title to Tim Bradley in June 2012 and was knocked out by Juan Manuel Marquez six months later.
Pacquiao is believed to want a rematch against Marquez in the future, with the goal of a subsequent fight against Floyd Mayweather.
But Rios, a former world lightweight champion, is keen to make a name for himself by defeating Pacquiao.
"Everyone thinks I'm just a tune-up fight. I'm nobody's tune-up and nobody's punch-bag," said the 27-year-old.
"A punching bag doesn't punch back. I'm a monster when I get in that ring. On Sunday a new star is on the rise."