UFC Champ Kamaru Usman Warns Jorge Masvidal, I’m Gonna Put the Nail in Your Coffin

Kamaru Usman isn’t just looking to beat Jorge Masvidal at UFC 261 — he wants to make a statement … telling TMZ Sports, “I want to put the nail in that coffin once and for all.” Usman — the reigning welterweight champ — already defeated…