He was off balance. He threw a right hand, brought his right foot forward which then squared him up.. Cunningham could have pushed him over. He done the exact same against Pacjkic. His foot work and balance does seem to have improved in recent fights though.
Was thinking this also on the few occasions I have seen him too. Not seen all of his fights but I have seen 2 or 3 and have felt very much the same.
Remember when Joe Louis was knocked down by that fat pub owner Tony Galento? Or when he was knocked down 4 times in his first amateur fight? What a glass jawed imposter he was.