Liverpool confirms Alexander Isak as starter in Champions League debut against Atlético Madrid at Anfield

Liverpool takes the field this Wednesday, September 17, 2025, for their Champions League debut against Atlético Madrid at Anfield. Under manager Arne Slot, the English side is going all-in to secure the first three points of the competition. The big news is the inclusion of striker Alexander Isak in the starting lineup, marking his official debut with the Reds in the world’s premier club competition. The lineup, announced hours before the match, also features recent signings like Florian Wirtz and Jeremie Frimpong, who are set to bolster the squad.

Isak’s selection as a starter reflects Slot’s confidence in the Swedish striker, signed in the latest transfer window. Taking the place of Hugo Ekitiké, who will start on the bench, Isak has a golden opportunity to prove his worth in a high-stakes clash. The match, part of the group stage’s opening round, promises to be a tough test for Liverpool, facing an Atlético side known for its defensive solidity and tactical efficiency.

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• Key highlights of the lineup:
• Alexander Isak debuts as a starter in attack.
• Florian Wirtz, a high-profile signing, holds his midfield spot.
• Jeremie Frimpong starts at right-back.
• Dominik Szoboszlai marks his 100th game for the club.

The Anfield clash is highly anticipated by fans, who will pack the stadium to cheer the team toward a winning start in the European campaign.

Strengthened lineup for the European challenge

Arne Slot’s strategy for the Atlético Madrid game is clear: field a balanced squad with experienced players and new talents. Alisson Becker guards the goal, while the defense consists of Andrew Robertson, Ibrahima Konaté, Virgil van Dijk, and Jeremie Frimpong. In midfield, Ryan Gravenberch, Dominik Szoboszlai, and Florian Wirtz provide creativity and dynamism. Up front, Mohamed Salah, Cody Gakpo, and Alexander Isak form a potent attacking trio poised to challenge the Spanish defense.

Isak, in particular, carries the weight of proving why Liverpool invested heavily in him. The Swedish striker, known for his speed, technique, and goal-scoring instinct, has shown promise in his initial training sessions with the club. His start over Ekitiké signals Slot’s trust in his ability to deliver in big games. Fans are eager for the forward to score his first goal in a Reds shirt.

• Strengths of the attacking trio:
• Mohamed Salah: leadership and a 0.7 goals-per-game average last season.
• Cody Gakpo: versatility to play across the front line.
• Alexander Isak: skill in dribbling and finishing in tight spaces.

Atlético Madrid, meanwhile, arrives with a robust defensive setup, led by José María Giménez and coached by Diego Simeone. The Spanish side’s organization and counter-attacking prowess will demand extra focus from Liverpool.

Team news is IN for our Champions League clash with Atlético Madrid 👊 #UCL

— Liverpool FC (@LFC) September 17, 2025

New signings and their adaptation

The transfer window brought significant changes to Liverpool, with arrivals crom the Web and posts on X for real-time information if needed. The inclusion of Florian Wirtz, Jeremie Frimpong, and Alexander Isak has reshaped the squad. Wirtz, who debuted in the Premier League, has quickly adapted to Slot’s system, offering vision and precise passing in midfield. Frimpong adds speed and attacking support at right-back, complementing the defensive structure.

Isak, however, is the name generating the most buzz. The former Newcastle striker was signed for his ability to play as a central forward or in wider roles. His Champions League debut is seen as a defining moment to cement his place in the squad. In training, Isak has shown chemistry with Salah and Gakpo, which could prove decisive against Atlético.

• Liverpool’s 2025/26 signings:
• Alexander Isak: signed for €75 million.
• Florian Wirtz: record-breaking €90 million transfer.
• Jeremie Frimpong: acquired for €40 million.
• Milos Kerkez: promising left-back, but on the bench for this match.

Despite the new additions, Slot retains a core of veterans like Van Dijk, Alisson, and Salah, ensuring experience in critical moments. This blend of youth and leadership is central to the Dutch manager’s philosophy.

Kerkez controversy and Slot’s decision

Another talking point is the absence of Milos Kerkez from the starting lineup. The left-back, signed from Bournemouth, faced criticism after being substituted in the first half against Burnley in the Premier League. Slot explained the move, citing Kerkez’s early yellow card and intense playing style, which risked a red card.

Opting to bench Kerkez for this high-stakes Champions League match reflects Slot’s cautious approach against Atlético’s counter-attacking threat. Andrew Robertson, starting at left-back, offers greater defensive reliability. The decision, while tactical, has sparked debate among fans, who are eager to see the young Hungarian regain his spot in future games.

• Factors behind Kerkez’s benching:
• Early yellow card in the Burnley match.
• Aggressive style, increasing foul risks in intense games.
• Robertson’s experience in high-level matches.

Fans remain optimistic about Kerkez’s potential, and he could still make an impact as a substitute.

Expectations for the Anfield showdown

The match against Atlético Madrid marks the start of Liverpool’s 2025/26 Champions League campaign, a competition where the club has won six titles. Anfield’s iconic atmosphere is expected to play a significant role, with fans turning the stadium into a cauldron to support Isak’s debut and push for a winning start.

Atlético, led by Antoine Griezmann and Álvaro Morata, will aim to neutralize Liverpool’s attack and capitalize on counter-attacks. Diego Simeone’s experience in European competitions makes this a formidable challenge. Liverpool’s success will hinge on maintaining possession and avoiding defensive errors, a focus of Slot’s training sessions.

• Key factors that could decide the game:
• Isak’s performance in his debut start.
• Liverpool’s ability to break down Atlético’s defense.
• Anfield’s crowd boosting team morale.
• Atlético’s counter-attacking efficiency.

The match also marks Dominik Szoboszlai’s 100th appearance for Liverpool, a milestone for the midfielder, who is a key link between defense and attack in Slot’s system.

Recent history between Liverpool and Atlético

Clashes between Liverpool and Atlético Madrid in the Champions League have produced thrilling encounters. In the 2019/20 season, Atlético knocked Liverpool out in the round of 16 with a dramatic 3-2 win at Anfield, sealed in extra time. Since then, Liverpool has sought to overcome that setback and reassert dominance against the Spanish side.

Slot, who watched that match as a fan, now has the chance to make his mark in this rivalry. His possession-based, fast-transition style will face a stern test against Simeone’s pragmatic approach. With Isak and Wirtz in the lineup, Liverpool will aim to dictate the pace from the outset, but defensive discipline will be crucial to counter Atlético’s lethal breaks.

• Memorable moments in the rivalry:
• 2019/20: Atlético’s Marcos Llorente scores in extra time to eliminate Liverpool.
• 2021/22: Liverpool wins 2-0 at Anfield in the group stage.
• Simeone’s style: compact defense and deadly counter-attacks.

This Wednesday’s match promises to add another intense chapter to this storied rivalry, with both teams vying to make a statement in the competition.