Depends on Diaz's Punch Resistance...Mikey WOULDN'T Be Able to Miss the Baby Bull, so the LOGICAL Answer is Mikey Mid to Late Stoppage or Wiiiiiiiiiiiiiiiiiiiiiide UD... REED
I say Mikey by stoppage if it's determined Diaz from the first Marquez fight. Mikey by UD if it's the Diaz from the Marquez rematch who was in survival mode.