FDNY firefighter will claim his ‘deadly’ bar-brawl punch was thrown in self-defense

A New York City firefighter will claim self-defense after allegedly socking a man in the head outside a Queens tavern early Saturday — a punch that may have caused the rival’s death.

An attorney for Justin Deieso, 35, of Whitestone, revealed the defense strategy after his client was released without bail on misdemeanor assault charges Saturday night. “It’s a case of self-defense for sure,” the lawyer, Robert Gallo, told The Post.