score:2
From the RyanAir luggage policy:
8.4.7 The following items must be checked in: any blunt instrument capable of causing injury, including tennis rackets, baseball and softball bats, clubs or batons - rigid or flexible - e.g. billy clubs, blackjacks (truncheon of leather covered lead with flexible shaft), night sticks & batons, cricket bats, golf clubs, hockey and hurley sticks, lacrosse sticks, kayak and canoe paddles, skateboards, billiard, snooker and pool cues, fishing rods, martial arts equipment, e.g. knuckle dusters, clubs, coshes, rice flails, num-chucks, kubatons, kubasaunts.
So as hand luggage, NO. As checked luggage, yes.