How do you throw the punching technique Alli used to KO Liston?

[AlexKid]

I think it was something he learnt from Jack Johnson but dont quote me on that.

[nivek535]

i dont see anything special about it but a coming-in-liston-well-timed-backing-up right hand. i think that sums it up ._.

[Beavis_5000]

A lot of people say Sonny took a dive for reasons ranging from the mob making him or he just knew Ali had his number and just layed down.

Regardless it was simply a straight right counter punch by a fighter with a reach and speed advantage.