Thibaut Courtois misses El Clasico on Sunday night after Real Madrid confirmed hours before kick-off that their first-choice goalkeeper is out with flu — leaving Andriy Lunin, who has not played a single minute this season, to start against LaLiga leaders Barcelona at Camp Nou in the biggest match of Madrid's season so far. The 34-year-old Belgian had played every game this season until Sunday, and his late withdrawal turns an already difficult away trip into a test of Madrid's depth at the exact position where they can least afford uncertainty.
What Real Madrid said, and when we knew
Real Madrid announced the withdrawal on Sunday in a short squad statement, quoted by Reuters and by Barcelona-focused outlet Barca Blaugranes: "Courtois is a last-minute absence due to a flu-like illness for tonight's match between Real Madrid and Barcelona, corresponding to the tenth matchday of La Liga. Illia Voloshyn has been called up in his place." Reuters reported that Courtois will miss his first game of the season, that his absence leaves manager Jose Mourinho without a key player for a vital clash with the league-leading rivals, and that Andriy Lunin is in line to replace him at Camp Nou, with Sergio Mestre the other goalkeeper in the matchday squad.
The timing is what makes this more than a routine team-news line. Courtois played in midweek, when Madrid beat RB Leipzig 4-1 in the Champions League, and reports ahead of the fixture credited him with 12 appearances in all competitions this season, 14 goals conceded and two clean sheets. There was no suggestion in the build-up that Madrid were preparing for anyone else in goal — because, all season, there has been no one else in goal.
The replacement: cold, but not untested in this fixture
Lunin's situation would be alarming for almost any deputy: according to Reuters, his last appearance for Real Madrid came on May 3, in a 2-0 win over Espanyol — nearly six months ago. He has not played at all this season. And yet his personal record in this exact fixture is the one genuinely reassuring data point Madrid have. According to Transfermarkt data compiled by Yardbarker, Lunin has faced Barcelona four times in a Madrid shirt — three in LaLiga and once in the Spanish Super Cup — and Madrid won three of them: 3-1 in the league in October 2022, 4-1 in the Super Cup final in January 2024, and 3-2 in the league in April 2024. His only defeat was the 4-0 home loss in October 2024, and he conceded eight goals across the four matches.
There is one caveat inside that record, and it matters tonight: all four of those matches were played away from Camp Nou — three at the Santiago Bernabeu and one in Saudi Arabia. Lunin has never faced Barcelona in their own stadium. He has, however, carried Madrid through a season before: when Courtois missed most of the 2023-24 campaign, Lunin became the starting goalkeeper for much of it and played a key role in the run to the Champions League final as Madrid won LaLiga and the European Cup. Mourinho is not throwing in a novice. He is throwing in a goalkeeper who has done this job at the highest level — just not since May, and never in this stadium, in this fixture.
Why this matters: the table makes this a nine-point game
Start with the arithmetic, because the arithmetic is the story. Barcelona have won all nine of their league matches and lead LaLiga. Madrid arrived in the weekend six points behind them, and after Atletico Madrid beat Deportivo La Coruna 1-0 on Saturday — Julian Alvarez scoring the winner — Madrid also start Sunday four points behind second-placed Atletico. A defeat at Camp Nou would leave Madrid nine points behind Barcelona after ten matchdays. That is not a gap a title race usually survives, even in October, and it is why a bout of flu, of all things, now carries genuine championship weight.
Goalkeeper is also the one position where Madrid's plan has been a single point of failure all season. Courtois has started every match; Lunin has had no rhythm minutes, no cup run-outs, nothing to keep him match-sharp. Modern goalkeeping at this level is as much about command — organising a high line, claiming crosses against a side that attacks in waves, distributing under a press — as it is about shot-stopping, and those are precisely the skills that rust fastest without games. Barcelona, perfect in the league so far, at home, will test all of them from the first minute.
Nor is Courtois Madrid's only absence. Reports ahead of the match noted that Vinicius Junior remains unavailable while serving a four-match domestic suspension, and match previews listed further absentees in defence and attack. Madrid are travelling to the leaders, six points back, without their first-choice goalkeeper and one of their most important forwards. That context — not the flu itself — is what turns a team-news update into a season-defining evening.
What Barcelona gain, and what they should not assume
For Barcelona, the obvious gain is psychological as much as tactical: the goalkeeper who has so often frustrated them in this fixture, and who was in goal for Madrid's 4-1 win over Leipzig in midweek, is not there. Their forwards can reasonably shoot earlier and cross with more conviction against a goalkeeper playing his first minutes of the season. But the Lunin record above is the counter-argument — three wins in four Clasicos, including a Super Cup final — and Barcelona's staff will know it. A cold goalkeeper is an opportunity only if you test him properly; a settled, motivated Lunin behind a deep Madrid block is a different proposition entirely.
What happens next
The immediate question is answered at kick-off: Lunin starts, Voloshyn and Mestre provide cover, and Madrid's season gets its sternest examination yet. The wider questions run beyond one night. If Lunin plays well, Madrid gain something valuable — proof that their most fragile position has a genuine second option, six months after he last played. If he struggles, the conversation will not really be about him; it will be about a squad-building choice that left a title challenger one illness away from a goalkeeper with zero minutes in October.
And then there is the table. Win, and Madrid cut the gap to three points and the Clasico Courtois missed becomes a footnote. Draw, and the six-point gap survives with the hardest away fixture gone. Lose, and nine points, in a season in which Barcelona have not dropped a single one, starts to look less like a gap and more like a verdict. All of it, remarkably, may hinge on the one player nobody expected to matter this weekend — the goalkeeper who had not played at all.
Update: the result — Madrid won 2-1 at Camp Nou
Signal Post News published this article before kick-off, when Courtois’s withdrawal was the story. The match finished Barcelona 1, Real Madrid 2. Kylian Mbappe put Madrid ahead in the 41st minute; Raphinha equalised for Barcelona in the 61st, his shot slipping past Lunin, who got a piece of it; and Mbappe won it in the 87th minute, tapping in Eduardo Camavinga’s cut-back. Lunin therefore finished his first appearance of the season on the winning side at Camp Nou, and the win cut Barcelona’s lead at the top of LaLiga to three points — Barcelona 27, Atletico Madrid 25, Real Madrid 24 — instead of the nine-point gap a defeat would have opened up. Full match report: Mbappe brace in El Clasico: Real Madrid beat Barcelona 2-1 at Camp Nou to end perfect start.
Related reading: PSG beat Barcelona 4-2 in the Champions League · The Madrid derby and Mourinho's printout · Messi's farewell match for Argentina
Sources
Reuters (October 25, 2026) — Real Madrid goalkeeper Courtois to miss Clasico due to illness: flu, club statement, first missed game this season, Lunin to replace, last appearance May 3 vs Espanyol, Voloshyn called up, Mestre in squad. Real Madrid club statement via Barca Blaugranes / SB Nation (October 25, 2026) — Rival Watch: Real Madrid rule Thibaut Courtois out of El Clasico: verbatim club wording, Madrid four points behind Atletico after Saturday's result. Flashscore (October 25, 2026) — Real Madrid's Courtois to miss crunch clash at Barcelona with illness: corroborating Reuters report. Yardbarker / Transfermarkt data (October 25, 2026): Lunin's four previous matches vs Barcelona (3 wins, 1 defeat, 8 conceded; none at Camp Nou). TOB News (October 25, 2026): standings context (Barcelona nine wins from nine; Madrid defeats by Betis and Atletico), Vinicius Junior suspension, Leipzig 4-1 midweek.