Cork later qualified for the All-Ireland final where Wexford were the opponents. On the night before the final O'Brien has admitted to sneaking away from the hotel where his team mates were staying and went to a pub in Dún Laoghaire where he drank nine pints of Guinness. This didn't affect his impact on the game the following day in a game that broke all records with a huge 64-point score line.
Cork later qualified for the All-Ireland final where Wexford were the opponents. On the night before the final O'Brien confessed to slipping away from the hotel where his teammates were staying and went to a pub in Dún Laoghaire where he consumed nine pints of Guinness. This didn't impact his performance on the following day in a game that set records with an enormous 64-point scoreline.