UFC 218 co-main-event breakdown: Can Francis Ngannou stop underdog Alistair Overeem?

UFC 218 co-main-event breakdown: Can Francis Ngannou stop underdog Alistair Overeem?  MMAjunkie.com UFC 218 results: Francis Ngannou scores scary, violent, brutal first round knockout over Alistair Overeem  MMAmania.com UFC's Francis Ngannou I Hit So Hard Ain't A Human I Can't KO  TMZ.comFull coverage