After impressing against Dublin in the Oireachtas Cup and Wexford in the Walsh Cup, Keher was included on the Kilkenny senior panel for the replay of the All-Ireland final against Waterford on 4 October 1959. After fifteen minutes he was introduced as a substitute for Johnny McGovern, who was forced off after a recurrence of a shoulder injury he'd picked up in the drawn game. Kilkenny took an early six-point lead, however, two goals from Tom Cheasty and a third from Mick Flannelly gave Waterford a half-time lead. Kilkenny scored only two points in the second half, courtesy of Keher, and eventually succumbed to a 3–12 to 1–10 defeat.