 Reilly played in Castleford's 11-22 defeat by Leeds in the 1968–69 Yorkshire Cup Final during the 1968–69 season at Belle Vue, Wakefield, on Saturday 19 October 1968, played right-, i.e.number 12, and was the coach in the 11-22 defeat by Leeds in the 1977–78 Yorkshire Cup Final during the 1977–78 season at Headingley Rugby Stadium, Leeds on Saturday 15 October 1977, was the coach in the 10-5 victory over Bradford Northern in the 1981–82 Yorkshire Cup Final during the 1981–82 season at Headingley Rugby Stadium, Leeds on Saturday 3 October 1981, and played right-, i.e.number 10, and was the coach in the 2-13 defeat by Hull F.C.