A fly-half known for his goal-kicking abilities, McCombe was aged 18 when called upon in 1968 to replace an injured Mike Gibson for a Five Nations match against France at Colombes, making him the youngest ever Ireland player in that position.[1] He kicked all of Ireland's points in a 6–16 loss, then didn't get another opportunity until 1975, when he displaced Mick Quinn in the Five Nations squad.[2] Finishing as the tournament's top points-scorer (26), McCombe registered the winning try in their opening match against England and contributed 13 points in a win over France.[3]