I just read up on the fight that Duffee lost (video above)
i guess Duffee dominated the fights 1st and 2nd round. He broke his opponents forearm with his fists in the first round (his opponent was trying to block duffee's punch)
i guess out of the blue, Duffee was KO'd during the final round
Note to Swede: i think the dude delivering the hammer fist realized Duffee was out, so he kinda pulled his punch mid-swing