 O'Sullivan was back in the no 3 jersey for the start of the 1999 championship as Kerry ran out easy winners in the first round on a 1-22 to 1-04 scoreline against Waterford.Ths set up a semi final with Limerick.Despite having appeared in 2 Munster minor finals in the years before Kerry had little trouble overcoming them on a 3-12 to 0-06 scoreline.