Wales and the Republic of Ireland meet in their opening UEFA Nations League game on Thursday.
The two sides know each well after meeting in the 2018 World Cup qualifiers.
Here, Press Association Sport considers some of the talking points surrounding the game in Cardiff.
Life of Ryan
It is a whole new ball game in international football with 55 European nations competing in the inaugural UEFA Nations League. The new tournament will see promotion and relegation as the aim is to replace meaningless friendlies with increased competition. Four leagues contains four groups with teams playing on a home and away basis. And it is serious stuff with the competition offering a route to the 2020 European Championships via play-offs in March of that year.