Juan vs juan 2, Juan Manuel Marquez is set to meet Juan “Baby Bull” Diaz in a rematch at 135 lbs on July 31st. At Mandelay Bay Casino, Las Vegas, NV....Both belts will be on the line, and both boxers have tasted defeat in their last outings. Will Diaz be able to improve on his last performance and regain his standing as the world’s best lightweight, or will the 36 year old Marquez show that age is just a number and retain his titles? Its the age old question of “repeat or revenge?”