Pesaje Mayweather-Canelo

  • Boxers Floyd Mayweather Jr. (L) and Canelo Alvarez pose during the official weigh-in for their bout at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Ethan Miller / Getty Images

  • Boxers Floyd Mayweather Jr. (L) and Canelo Alvarez (face off/pose) during the official weigh-in for their bout at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxers Floyd Mayweather Jr. (L) and Canelo Alvarez (face off/pose) during the official weigh-in for their bout at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxers Floyd Mayweather Jr. (L) and Canelo Alvarez (face off/pose) during the official weigh-in for their bout at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxers Floyd Mayweather Jr. (L) offers Canelo Alvarez his championship belt during the official weigh-in for their bout at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxers Floyd Mayweather Jr. (L) offers Canelo Alvarez his championship belt during the official weigh-in for their bout at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • LAS VEGAS, NV - SEPTEMBER 13: Boxers Floyd Mayweather Jr. (L) and Canelo Alvarez face off during the official weigh-in for their bout at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. (Photo by Ethan Miller/Getty Images) Ethan Miller / Getty Images

  • Boxers Floyd Mayweather Jr. (L) and Canelo Alvarez face off during the official weigh-in for their bout at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Ethan Miller / Getty Images

  • Boxer Canelo Alvarez poses (on the scale) during the official weigh-in for his bout against Floyd Mayweather Jr. at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxer Canelo Alvarez poses (on the scale) during the official weigh-in for his bout against Floyd Mayweather Jr. at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxer Canelo Alvarez poses (on the scale) during the official weigh-in for his bout against Floyd Mayweather Jr. at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxer Floyd Mayweather Jr. poses (on the scale) during the official weigh-in for his bout against Canelo Alvarez at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxer Floyd Mayweather Jr. poses (on the scale) during the official weigh-in for his bout against Canelo Alvarez at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxer Floyd Mayweather Jr. poses on the scale during the official weigh-in for his bout against Canelo Alvarez at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Ethan Miller / Getty Images

  • Boxer Floyd Mayweather Jr. acknowledges the crowd during the official weigh-in for his bout against Canelo Alvarez at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images

  • Boxer Canelo Alvarez acknowledges the crowd during the official weigh-in for his bout against Floyd Mayweather Jr. at the MGM Grand Garden Arena on September 13, 2013 in Las Vegas, Nevada. The fighters will meet in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. Al Bello / Getty Images