In rugby union, the Six Nations Championship is an annual international competition involving England, France, Ireland, Italy, Scotland, and Wales. Peter O'Mahony, Cian Healy, and Conor Murray are decorated Irish players who have represented their country for many years. - Peter O'Mahony, Cian Healy, and Conor Murray, all centurions for Ireland, have announced their retirement from international rugby. - The retirements will take effect at the conclusion of the 2025 Six Nations Championship. - O'Mahony and Healy will retire from the game entirely at the end of the season, while Murray is set to continue his career abroad. - The players' decision marks the end of an era for Irish rugby, as they have been key figures in the team's success.