INGLEWOOD, California (AP):Spain have not lost and have not even conceded a single goal at this year’s World Cup. La Roja are unbeaten in 36 straight competitive matches since March 2023.This lofty standard of play clearly doesn’t scare Belgium, who  are on a surging trajectory of  their own heading into the teams’ World Cup quarterfinal match today.While Spain have been Europe’s most consistent winners for the past three years, Belgium have played their way into position for what could be the final chance for their full golden generation of stars to do something spectacular together.The tantalising clash at SoFi Stadium matches one of the pre-tournament favourites and the reigning European champions against Belgium, who have never quite reached their full potential despite the big-money stars across their roster. Yet goalkeeper Thibaut Courtois says Belgium realise the opportunity they have after blowing out the co-hosts United States 4-1 on Monday in their best performance of the tournament and extending the Red Devils’ own unbeaten streak to 18 matches across all competitions.“I think they’re one of the favourites to win it, so obviously, we start as the underdogs against them,” said Courtois, who has been at Real Madrid since 2018. “But in football, everything is possible, and I believe that we can win, with all respect. But obviously they are the favourites.”While Spain have struggled to score occasionally over the past month,  their defence has remained perfect, with Rodri orchestrating the effort superbly from midfield. Goalkeeper Unai Simón has played a World Cup-record 609 consecutive minutes without conceding, racking up another World Cup record of six straight clean sheets dating back to the 2022 tournament in Qatar.Simón has only had to make six saves in five World Cup matches, but Belgium have enough offensive talent to make any goalkeeper work – including Kevin De Bruyne, Youri Tielemans, veteran striker Romelu Lukaku, playmaker Leandro Trossard, and Charles De Ketelaere, who had two goals against the Americans.Despite a wealth of good players around teenage sensation Lamine Yamal, Spain have not scored with as much flair as Belgium in this tournament, getting seven of their nine goals at the World Cup in two routs of overmatched Saudi Arabia and Austria. La Roja managed only Mikel Merino’s clutch injury-time goal while beating Portugal 1-0 in the round of 16.But striker Mikel Oyarzabal scored two goals in Spain’s first appearance at SoFi Stadium last week, leading Spain to a 3-0 rout of Austria.“I think we’ve managed to build a really solid core group,” Oyarzabal said Thursday. “Regardless of whether things go well or badly, or who’s playing, the team responds, and I think that’s crucial. We’ve achieved something very difficult: creating that kind of unity within the national team.”Belgium have been to the World Cup quarterfinals more recently than Spain. The veteran Belgian stars were youngsters eight years ago when the Red Devils made the semi-finals in Russia, while Spain have notwon a knockout match since winning the World Cup in 2010.INJURY CONCERNSBelgium lost midfielder Amadou Onana to a knee injury this week, forcing a tactical change to preserve their defensive structure. That change might simply be the return of De Bruyne, who likely didn’t play against the US to keep him in top condition for today’s match. Winger Jérémy Doku is thought to be healthy now but hasn’t consistently played well at the World Cup.Nico Williams is expected to be fit after being limited earlier in the World Cup, and Spain otherwise appear to be in good health.