Sorloth and Alvarez strike to give Atleti vital first-leg lead over 10-man Barcelona

In the opening four minutes, Marcus Rashford fired two shots on goal, highlighting Barcelona's rapid opening, yet Julian Alvarez from Atletico hit back promptly. The teams seized every chance to push forward, fostering a lively back-and-forth encounter within the first 10 minutes.

Lamine Yamal appeared poised to claim his 10th Champions League assist for Rashford, but officials ruled him offside from a prior moment in the sequence.

Atletico remained unfazed by Barcelona's command of the ball, regularly deploying eager forwards to exploit the home side's elevated back line. The Red and Whites proved skilful at retreating with 10 players to hinder the Catalan outfit.

True scoring opportunities proved scarce for either side, although moments before half-time, Pau Cubarsi earned a red card for a deliberate foul, granting the away team a man advantage.

From that subsequent free-kick, Alvarez whipped in a sublime top-corner effort, hushing the Camp Nou faithful.

Even reduced to 10 men, Barcelona pressed their rivals once more, with Rashford coming close to scoring on their initial foray after the restart, then rattling the crossbar with a fierce free-kick.

The home side persisted in their assaults, as Dani Olmo narrowly missed tying the score at the far post via a deflection. Atletico mounted scant offensive pressure themselves, yet repelled Barcelona whenever they advanced in numbers.

From nowhere, a rapid counter by the visitors delivered the ball to replacement Alexander Sorloth, who slotted home neatly with his left foot to extend Atletico's lead to two.

Barcelona toiled diligently yet lacked sharpness, suffering their initial loss across 10 fixtures in every competition (eight victories, one draw). Atletico's triumph, their first at Camp Nou since 2006, sets them up to clinch progression on home soil and secure an unprecedented trio of Champions League quarter-final successes against the Catalans.