Rob Gronkowski already has enemies in the WWE -- with one of the wrestling superstars CALLING OUT the NFL legend as a hot piece of garbage on "Monday Night Raw."
Remember, Gronk is NOT a WWE wrestler -- at least not yet -- though his best friend Mojo Rawley is trying to convince the tight end to make the switch from the gridiron to the ring.
Which brings us to "Raw" where Lio Rush and Bobby Lashley were talking trash to Finn Balor -- when Lio dragged Rob's name into his rant.
"Now you are gonna be forced to leave the game as a beaten, broken, hot piece of garbage like Rob Gronkowski," Lio told Finn.