@raeburnshield: Replying to @nightfuror Great Question. longest Run / tenure is made up of the match you won it in plus however many defences. here are all #rugby nations who have won it and their best efforts. have included some additional data points acknowledging which "tier" they are in. e.g.only two nations made the 15 plus top tier... #rugbyunion #raeburnshield #newzealand