Trailer for Manny Pacquiao biopic 'Kid Kalufu' chronicles his early life in the Philippines

Ahead of this Saturday's big fight between Floyd Mayweather Jr. and Manny Pacquiao, there's a new movie chronicling the latter's origin story.

"Kid Kalufu" tells the story of Manny Pacquiao's early life as a poor kid living in the Philippines that would eventually become one of the greatest boxers of his generation.

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