Match will pit aggressive Roy Jones Jr. against fleet-footed Floyd Mayweather . Roy Jones Jr. says boxer has `` blueprint '' to hand Floyd Mayweather 10th loss . It 's an assertion with which Jones and Kellerman concurred . Former champ Mayweather skeptical , says Cotto will have to change style . Roy Jones Jr. uncharacteristically heaping praise on Cotto before fight .
Match will pit aggressive Roy Jones Jr. against fleet-footed Floyd Mayweather . Roy Jones Jr. says boxer has `` blueprint '' to hand Floyd Mayweather 10th loss . Former champ Mayweather skeptical , says Cotto will have to change style . Roy Jones Jr. uncharacteristically heaping praise on Cotto before fight .