#2 Jose Gaya, the heir apparent to Jordi Alba
Apart from Thiago, another bright spark for Spain was Jose Gaya on the left flank. Perhaps not at every occasion, but the primary threat for Spain in terms of getting behind their defence was offered by Gaya.
On multiple occasions, he got into good positions just by staying wide while Oyarzabal moved centrally. Had the ball been played into the space ahead of him more regularly, Spain could've been absolutely rampant in the game.
As the game wore on, he started to get into the box as well and had a couple of chances himself but couldn't finish them off or failed to find a teammate till the 92nd minute when he found Alcacer with a low cross and put Spain 4-0 up. Jordi Alba will still start most games for Spain, but should Gaya's services be needed, Spain will not miss their first-choice left-back.