LAS VEGAS, NV - MAY 02: Boxer Amir Khan poses on the scale during his official weigh-in at the MGM Grand Garden Arena on May 2, 2014 in Las Vegas, Nevada. Khan will meet Luis Collazo in a welterweight bout on May 3. (Photo by Bryan Steffy/WireImage)
LAS VEGAS, NV - MAY 02: Boxer Amir Khan poses on the scale during his official weigh-in at the MGM Grand Garden Arena on May 2, 2014 in Las Vegas, Nevada. Khan will meet Luis Collazo in a welterweight bout on May 3. (Photo by Bryan Steffy/WireImage)