Talking Points: What Thursday's Results Mean for the Last 16

The most immediate storyline to emerge from Thursday's fixtures is the prospect of Spain versus Portugal in the last 16. Two nations with a shared border, a fierce footballing rivalry, and genuine squads capable of winning this tournament will now meet in the knockout rounds. It is the kind of fixture World Cups are made for, and it arrived without anyone having to wait until the final.

Spain's 3-0 demolition of Austria was the performance of the day. Oyarzabal's double gave them a cutting edge to match their structural solidity, and a three-goal winning margin suggests this is a team operating at or near their ceiling. Their route through the tournament has been purposeful, and they will enter the Iberian derby as a side that has yet to be seriously tested.

Portugal's win was scrappier but no less important. Croatia, a nation with a history of deep World Cup runs, were ultimately undone, and the nature of a hard-fought 2-1 victory may actually serve Portugal well. Teams that have had to grind out results often arrive in the knockout stage more battle-hardened than those who have coasted through.

Switzerland's progression is perhaps the least surprising result of the three, but no less significant. They are now in the last 16 for the second consecutive World Cup and have done so with a defensive resilience and attacking spark that will trouble any opponent. Algeria's exit, meanwhile, will prompt difficult conversations on the African continent about the gap between promise and delivery on the biggest stage.