O'Herlihy was not long in the RTÉ Sports department when he became a regular presenter for such programmes as "Sunday Sport" and "Sports Stadium". In 1978 he became RTÉ Soccer host alongside Eamon Dunphy, in 1984 John Giles joined the panel and Liam Brady did in 1998. Since 1974 Bill became RTÉ's chief sports presenter for such events as all Olympic Games until 2012, FIFA World Cups until 2014, UEFA European Football Championships until 2012 and European and World Track and Field Championships. He hosted RTÉ highlights of the Ryder Cup in 2006 when it was at the K Club in Ireland and continued to present coverage of Ireland's soccer internationals for RTÉ, along with Eamon Dunphy, Johnny Giles and Liam Brady.