Ireland v Argentina, an unexpected but very real rugby rivalry.
The nations have met 15 times in the last 25 years and it is Ireland who have been the winning side most often, tasting victory in 10 of those games.
But those stats change when you look at the Rugby World Cup.
Ireland and Argentina have butted heads on three occasions on the biggest stage of world rugby and Argentina have triumphed in two of them.
The highlights of each of these games show how hotly contested each affair has been and Ireland will be desperate to tie up their World Cup record against the Pumas when the sides meet in the quarter-final on Sunday.
