MANILA, Philippines – Olympic bronze medalist Eumir Marcial and former featherweight champion Mark Magsayo delivered impressive victories in the undercard of the Manny Pacquiao–Mario Barrios bout held Sunday (Manila time) at the MGM Grand in Las Vegas.

Barrios, well know as “The Hyena” will fight undefeated Dominican Joan Guzman, former WBO champion, at MGM Grand on Saturday, ... Guzman has won 25 bouts, with 17 by knockout.

Manny Pacquiao will face off against champion Mario Barrios Saturday night, but "Pacman's" toughest opponent is expected to be his age.