Wales now know that they are officially guaranteed at least a place in the World Cup play-offs - after Spain beat Greece 1-0.

Having won their Nations League group before starting the qualifying group, Wales were already in a strong position.

But Spain's win in Athens means that even if Wales finish outside the top two in their qualifying group, they go into the play-offs.

Wales, however, must finish still second in their group to have any chance of being seeded for next March's play-offs.

Teams who reach the play-offs via the Nations League are unseeded, and will be away in their semi-final to a seeded nation.

Wales can guarantee a top-two finish with four points from their final two qualifiers at home to Belarus on Saturday and Belgium on Tuesday.

"They're knockout games," said manager Rob Page. "We still have two cup finals left - and that's how we're going to treat it.

"We want all of our best players available and every player will be, because they're two big games and they'll all want to be involved in that.

"We'll have the crowd behind us and we can't wait. It's two cup finals, at home with a full house - bring it on."

Belgium are five points clear at the top and almost certain to secure the only automatic qualification spot as group winners.

It means Wales are now looking at the play-offs as their most realistic route to a first World Cup finals since 1958.