Floyd Mayweather Jr. vs. Manny Pacquiao round por round|EN FOTOS

Floyd Mayweather Jr. with his belt.   (Al Bello / Getty Images)

Pacquiao takes aim.   (John Locher / Associated Press)

Floyd Mayweather lands a right against Manny Pacquiao in their May 2, 2015, fight.  (Isaac Brekken / Associated Press)

Floyd Mayweather Jr. and Manny Pacquiao trade blows during their welterweight title fight on May 2, 2015.

The crowd watches the fight at MGM Grand.   (Eric Jamison / Associated Press)

Mayweather in his corner.   (Al Bello / Getty Images)

Close-range fighting.   (Isaac Brekken / Associated Press)

Pacquiao ducks to avoid a Mayweather left.   (FREDERIC J. BROWN / AFP/Getty Images)

Mayweather ducks.   (Al Bello / Getty Images)

Pacquiao punches Mayweather near the ropes.   (Eric Jamison / Associated Press)

The fighters get more aggressive.   (John Locher / Associated Press)

Floyd Mayweather Jr. and Manny Pacquiao trade blows.   (John Locher / Associated Press)

Manny Pacquiao in his corner.

The fighters in the ring in Round 1.   (Robert Gauthier / Los Angeles Times)

Floyd Mayweather Jr. throws a punch in the first round.   (Al Bello / Getty Images)

Manny Pacquiao throws a punch in the first round.   (FREDERIC J. BROWN / AFP/Getty Images)

Manny Pacquiao walks toward the ring.   (Al Bello / Getty Images)

Floyd Mayweather Jr. in the ring before the fight.   (Al Bello / Getty Images)

Manny Pacquiao fans gather in L.A.’s Filipinotown.   (Allen J. Schaben / Los Angeles Times)

Jamie Foxx sings the national anthem.   (FREDERIC J. BROWN / AFP/Getty Images)

Leo Santa Cruz celebrates his majority decision over Jose Cayetano in a featherweight bout Saturday at MGM Grand Garden Arena.

Leo Santa Cruz, right, throws a right at Jose Cayetano during their featherweight bout Saturday in Las Vegas.

Leo Santa Cruz, right, defeated Jose Cayetano by unanimous decision in a 10-round featherweight fight in Las Vegas in May.

Leo Santa Cruz, right, throws a right at Jose Cayetano during their featherweight bout Saturday in Las Vegas.

Leo Santa Cruz, left, punches Jose Cayetano during their featherweight fight at MGM Grand in Las Vegas on May 2, 2015.

Leo Santa Cruz, right, punches Jose Cayetano during their featherweight fight at MGM Grand in Las Vegas on May 2, 2015.

Jose Cayetano, right, of Mexico, lands a right to the body of Leo Santa Cruz during their featherweight fight at MGM Grand in Las Vegas on May 2, 2015.

Leo Santa Cruz, right, trades blows with Jose Cayetano during their featherweight bout at MGM Grand in Las Vegas on May 2, 2015.

New England Patriots quarterback Tom Brady talks with Leslie Moonves and Julie Chen before the welterweight unification championship bout between Floyd Mayweather Jr. and Manny Pacquiao on Saturday night.

Ring girls practice their routine before the first fight of the Mayweather-Pacquiao card on Saturday at the MGM Grand Garden Arena.

Boxing fans pose for a photo in front of a Mayweather-Pacquiao poster on Saturday in the lobby of the MGM Grand.

Brad Solomon celebrates after beating Adrian R. Granado in a super-middleweight fight, which was the first on the Mayweather-Pacquiao undercard Saturday at the MGM Grand Garden Arena in Las Vegas.

Vasyl Lomachenko lands a right to the face of Gamalier Rodriguez during their featherweight title fight on Saturday night at the MGM Grand Garden Arena.

Vasyl Lomachenko tries to slip a punch by Gamalier Rodriguez during their featherweight title fight in Las Vegas.

Gamalier Rodriguez gets a standing eight count from referee Robert Byrd after being knocked down by Vasyl Lomachenko during their featherweight title fight Saturday.

Vasyl Lomachenko celebrates his ninth-round knockout victory over Gamalier Rodriguez in their featherweight title fight at the MGM Grand Garden Arena.   (Eric Jamison / Associated Press)