As much as I bash NBC, I'd cringe thinking of the crew Fox would bring to the table. Chris Meyers in the Costas/Jim McKay role? Joe Buck doing track or swimming? Terry Bradshaw doing gymnastics? Gus Johnson would have to do weightlifting - AND IT'S UP!!!! OH MY GOD!!!! Darrell Waltrip on bicycling - BOOGITY BOOGITY BOOGITY!
I could see Murdoch doing it - just to do it, but Fox doesn't need it.
ESPN has more people that would be less annoying - Saunders or Musberger (you are looking LIVE at Copacabana Beach!) would be decent as the host, figure Chris Fowler could do pretty much anything, Tirico, Dan Schulman, Scott Van Pelt, Nessler...