Luis Enrique and his side got their World Cup up and running by battering Costa Rica, but still have work to do after they were held to a draw by Germany.
A point against Japan and they will be through to the last-16, though they might need all three to be confirmed as group winners. Should Spain lose, and Costa Rica beat Germany, then the 2010 champions will be out.
Japan were so impressive against Germany but will be hugely frustrated with the defeat to Costa Rica, one that leaves them needing a result tonight to reach the knockout stages.
A win will see them through to the last-16, while a draw could be enough depending on the result in the other match.
Here’s how to follow the crucial match…
Where to watch Japan vs Spain
TV channel: In the UK, the match will be televised free-to-air and live on ITV, with coverage beginning at 6.15pm.
Live stream: Fans can also catch the game live online via ITVX and ITV website.
Live blog: You can follow all the action on matchday via Standard Sport’s live blog, with expert analysis from Malik Ouzia at the ground.
