 On 15 October 2017, O'Neill guided Na Piarsaigh to a third county final in four seasons.He claimed his second championship as manager following the 1-22 to 2-14 defeat of Kilmallock.On 19 November 2017, O'Neill won a second Munster Championship as Na Piarsaigh manager after a 3-15 to 2-10 defeat of Ballygunner in the final.