Ronaldo, 40, is 23 years older than Yamal, 17, but Yamal's international résumé already stacks up well against one of the greatest strikers of all time. Here's an in-depth look at the two stars of the UEFA Nations League final:

A generational star and a prodigious teenager. Neighboring nations in a final match. It's Spain and Portugal for the Nations League title.

Portugal captain Cristiano Ronaldo is relaxed ahead of Sunday's Nations League final which has been dubbed a duel of the generations between him and Spain teenager Lamine Yamal. Ronaldo, 40, told reporters on Saturday that there have been such comparisons between him and another player.