Wales boss Chris Coleman believes Tuesday's opponents Belgium are dark horses to win the World Cup in Brazil next summer
After the morale-boosting 1-0 win over Macedonia on Friday, Wales face a daunting test against a Belgium team including Premier League talents such as Eden Hazard, Romelu Lukaku, Marouane Fellaini, Kevin De Bruyne and Kevin Mirallas.
The game could prove to be Coleman's last competitive fixture in charge of the Dragons, with talks over a contract extension having stalled.
He has urged his injury-hit squad to show no fear against a side who sealed their place in Brazil with victory over Croatia on Friday, but acknowledges the Red Devils will be among the contenders to lift the game's biggest prize.
"They were 40th in the world when we first played them in Cardiff at the start of the campaign. Now, they are sixth," said Coleman.
"They are a very good team. We've been doing our homework on them and pound for pound and player for player, they have the most expensive squad in the world.
"I'd fancy them at the World Cup. They have a real outside chance. They are a very good team.
"It's a difficult test for us on Tuesday night. I don't think there will be many teams looking at them thinking, 'We'd like to play them'."
On current form, few players in the Wales squad for this double-header would make it into the Belgian side, but Coleman feels Arsenal midfielder Aaron Ramsey is an exception after the 22-year-old turned in another exemplary display against Macedonia.
"I'd put Aaron in any team because of the way he is playing. There's not a manager who wouldn't have him in his team every game," added Coleman.
"He could play in the Belgian team, absolutely, and I don't say that because I'm Welsh. He's that good."