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:

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.

UEFA Nations League final between Spain and Portugal approaches, Portuguese star Cristiano Ronaldo had some kind words for young Spanish star Lamine Yamal. However, he left a clear warning regarding his future.