El director Rodrigo León presentó la primera edición del documental "Libra por libra" que retrata los últimos años de la carrera del campeón mexicano Juan Manuel Márquez.

"Para mi era muy importante presentar algo así. Es un homenaje a un gran campeón mexicano que ocupó el lugar de los grandes peleadores que ya dejaron el ring. Un mensaje para los fanáticos de que con trabajo todo se puede", dijo en entrevista para HuffPost Voces León, quien también dirigió "La vida es turbia".

El rodaje de la pieza comenzó desde hace un año y medio y en el trabajo se presentan fragmentos de la vida personal del peleador, su faceta como padre de familia, así como la gran rivalidad que sostiene con el peleador filipino Manny Pacquiao.
Con motivo de la cuarta pelea ante el campeón oriental, pactada para el 8 de diciembre en Las Vegas, Nevada, el documental se exhibirá del 3 al 7 de diciembre a nivel nacional.

En la pieza se muestra desde la pelea ante el australiano Michael Katsidis, pelea en la que Dinamita consiguió el triunfo por nocaut técnico en nueve episodios en el 2010, siguiendo al campeón capitalino por Filipinas, Estados Unidos y México.

"Quiero que la gente vea el esfuerzo que lleva el entrenamiento. Parece sencillo, pero es más complicado de lo que se ve", mencionaba Márquez Méndez durante el documental en el que se entrevista a su entrenador Ignacio Beristain, a sus promotores Bob Arum y Fernando Beltrán, así como a miembros de su equipo de trabajo y periodistas, incluso fanáticos.

En el documental, Juan Manuel Márquez señala que más que cualquier tipo de entrenamiento siente más pesado el contacto con la prensa. Aseguró que diariamente pasa al rededor de 4 horas conviviendo con los medios y que le gustaría más ocupar ese tiempo para estar con su familia.

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  • Juan Manuel Marquez, Karina Gonzalez

    Juan Manuel Marquez, right, poses for photos with Miss Mexico Karina Gonzalez during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Marquez is scheduled to face off against Manny Pacquiao in a welterweight fight boxing match on Saturday. Gonzalez is competing in next week's Miss Universe pageant in Las Vegas. (AP Photo/Julie Jacobson)

  • Janin Tugonon

    Miss Philippines Janine Tugonon poses for photos during a news conference for Manny Pacquiao and Juan Manuel Marquez, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao and Marquez are scheduled to face off in a welterweight boxing match on Saturday. Tugonon is in Las Vegas for next week's Miss Universe pageant. (AP Photo/Julie Jacobson)

  • Manny Pacquiao, Janine Tugonon

    Manny Pacquiao, left, poses for photos with Miss Philippines Janine Tugonon during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao is scheduled to take on Juan Manuel Marquez in a welterweight boxing match on Saturday. Tugonon is scheduled to compete in the Miss Universe pageant on Dec. 19. (AP Photo/Julie Jacobson)

  • Manny Pacquiao

    Manny Pacquiao listens to comments during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao is scheduled to take on Juan Manuel Marquez in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez, Manny Pacquiao

    Manny Pacquiao, left, and Juan Manuel Marquez pose for photos during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao and Marquez are scheduled to face off in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Manny Pacquiao, Freddie Roach

    Manny Pacquiao, right, and manager Freddie Roach react to comments during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao is scheduled to take on Juan Manuel Marquez in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez

    Juan Manuel Marquez listens to comments during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Marquez will be taking on Manny Pacquiao in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Manny Pacquiao, Juan Manuel Marquez

    Manny Pacquiao plays to supporters during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao is scheduled to take on Juan Manuel Marquez in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez, Manny Pacquiao

    Manny Pacquiao, left, and Juan Manuel Marquez, right, pose for photos during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao and Marquez are scheduled to face off in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez, Manny Pacquiao, Janine Tugonon, Karina Gonzalez

    Manny Pacquiao, left, and Juan Manuel Marquez, right, pose for photos with Miss Universe contestants Miss Philippines Janine Tugonon, second from left, and Miss Mexico Karina Gonzalez during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao and Marquez are scheduled to face off in a welterweight boxing match on Saturday. The Miss Universe contest is scheduled to take place in Las Vegas on Dec. 19. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez, Manny Pacquiao, Janine Tugonon, Karina Gonzalez

    Manny Pacquiao, left, and Juan Manuel Marquez, right, pose for photos with Miss Universe contestants Miss Philippines Janine Tugonon, second from left, and Miss Mexico Karina Gonzalez during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao and Marquez are scheduled to face off in a welterweight boxing match on Saturday. The Miss Universe contest is scheduled to take place in Las Vegas on Dec. 19. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez, Manny Pacquiao, Janine Tugonon, Karina Gonzalez

    Manny Pacquiao, left, and Juan Manuel Marquez, right, pose for photos with Miss Universe contestants Miss Philippines Janine Tugonon, second from left, and Miss Mexico Karina Gonzalez during a news conference, Wednesday, Dec. 5, 2012, in Las Vegas. Pacquiao and Marquez are scheduled to face off in a welterweight boxing match on Saturday. The Miss Universe contest is scheduled to take place in Las Vegas on Dec. 19. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez

    Juan Manuel Marquez, left, signs autographs for fans upon arriving at the MGM Grand hotel-casino, Tuesday, Dec. 4, 2012, in Las Vegas. Marquez is scheduled to face Manny Pacquiao in a welterweight boxing match Saturday. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez

    Juan Manuel Marquez listens to questions from reporters upon arriving at the MGM Grand Hotel-Casino, Tuesday, Dec. 4, 2012, in Las Vegas. Marquez is scheduled to face Manny Pacquiao in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez

    Juan Manuel Marquez, center, poses for photos upon arriving at the MGM Grand Hotel-Casino, Tuesday, Dec. 4, 2012, in Las Vegas. Marquez is scheduled to face Manny Pacquiao in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Juan Manuel Marquez

    Juan Manuel Marquez, left, signs autographs for fans upon arriving at the MGM Grand Hotel-Casino, Tuesday, Dec. 4, 2012, in Las Vegas. Marquez is scheduled to face Manny Pacquiao in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Manny Pacquiao

    Manny Pacquiao greets fans during his arrival at the MGM Grand Hotel-Casino, Tuesday, Dec. 4, 2012, in Las Vegas. Pacquiao is scheduled to face Juan Manuel Marquez in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Manny Pacquiao

    Manny Pacquiao listens to questions from the media during his arrival at the MGM Grand hotel-casino, Tuesday, Dec. 4, 2012, in Las Vegas. Pacquiao is scheduled to face Juan Manuel Marquez in a welterweight fight on Saturday. (AP Photo/Julie Jacobson)

  • Manny Pacquiao

    Manny Pacquiao, center, steps off the bus during his arrival at the MGM Grand hotel-casino, Tuesday, Dec. 4, 2012, in Las Vegas. Pacquiao will face Juan Manuel Marquez in a WBO welterweight fight on Saturday. (AP Photo/Julie Jacobson)

  • Manny Pacquiao

    Manny Pacquiao, center, enters the ring in the lobby of the MGM Grand Hotel-Casino during his arrival, Tuesday, Dec. 4, 2012, in Las Vegas. Pacquiao is scheduled to face Juan Manuel Marquez in a welterweight boxing match on Saturday. (AP Photo/Julie Jacobson)

  • Manny Pacquiao

    Manny Pacquiao, center, poses for photos with fans during his arrival at the MGM hotel-casino, Tuesday, Dec. 4, 2012, in Las Vegas. Pacquiao is scheduled to face Juan Manuel Marquez in a welterweight fight on Saturday. (AP Photo/Julie Jacobson)

  • Manny Pacquiao

    Manny Pacquiao jumps rope while training in Los Angeles, Monday, Dec. 3, 2012. Pacquiao is scheduled to fight Juan Manuel Marquez in a welterweight boxing match in Las Vegas on Saturday. (AP Photo/Damian Dovarganes)

  • Manny Pacquiao

    Manny Pacquiao gestures for members of the media as he trains in Los Angeles, Monday, Dec. 3, 2012. Pacquiao is scheduled to fight Juan Manuel Marquez in a welterweight boxing match in Las Vegas on Saturday. (AP Photo/Damian Dovarganes)

  • Pacquiao arribó a Los Angeles

  • Pacquiao arribó a Los Angeles

  • Pacquiao arribó a Los Angeles

  • Juan Manuel Marquez,

    Boxer Juan Manuel Marquez listens during during a news conference in New York, Wednesday, Sept. 19, 2012. Marquez and Manny Pacquiao are promoting their fourth fight, scheduled for Dec. 8, 2012 in Las Vegas. (AP Photo/Seth Wenig)

  • Manny Pacquiao

    Boxer Manny Pacquiao listens during during a news conference in New York, Wednesday, Sept. 19, 2012. Paquiao and Juan Manuel Marquez are promoting their fourth fight, scheduled for Dec. 8, 2012 in Las Vegas. (AP Photo/Seth Wenig)

  • Gira promocional Manny Pacquiao vs Juan Manuel Márquez 4

  • Gira promocional Manny Pacquiao vs Juan Manuel Márquez 4

  • Gira promocional Manny Pacquiao vs Juan Manuel Márquez 4

  • Gira promocional Manny Pacquiao vs Juan Manuel Márquez 4

  • Manny Pacquiao, Freddie Roach

    Manny Pacquiao, of the Philippines, right, and his trainer Freddie Roach talk with reporters at a news conference to promote his upcoming boxing match against Juan Manuel Marquez in Beverly Hills, Calif., Monday, Sept. 17, 2012. The two will fight for the fourth time on Dec. 8 in Las Vegas. (AP Photo/Reed Saxon)

  • Manny Pacquiao, Freddie Roach

    Manny Pacquiao, of the Philippines, right, and his trainer Freddie Roach laugh at a news conference to promote his upcoming boxing match against Juan Manuel Marquez in Beverly Hills, Calif., Monday, Sept. 17, 2012. The two will fight for the fourth time on Dec. 8 in Las Vegas. (AP Photo/Reed Saxon)

  • Juan Manuel Marquez

    Juan Manuel Marquez, of Mexico, talks to reporters to promote his upcoming boxing match against Manny Pacquiao at a news conference in Beverly Hills, Calif., Monday, Sept. 17, 2012. The two will fight for the fourth time on Dec. 8 in Las Vegas. (AP Photo/Reed Saxon)

  • Juan Manuel Marquez, Manny Pacquiao , Freddie Roach, Ignacio Beristain

    Boxers Juan Manuel Marquez, second from right, and Manny Pacquiao, second from left, pose for pictures with their trainers, Freddie Roach, left, and Ignacio Beristain during a news conference in New York, Wednesday, Sept. 19, 2012. The boxers are promoting their fourth fight, scheduled for Dec. 8, 2012 in Las Vegas. (AP Photo/Seth Wenig)