Liverpool defeated Atletico Madrid 2-1 at Anfield on September 10, 2026, in a Champions League fixture. Alexis Mac Allister provided the decisive moment, scoring the winning goal with a strike from outside the penalty area.

The match began with Marcos Llorente scoring the opening goal for the visitors. Dominik Szoboszlai later equalised for Liverpool, setting the stage for Mac Allister’s late winner. This fixture marked the debut Champions League match for Andoni Iraola as Liverpool manager.

Following the match, Steven Gerrard described Mac Allister’s performance as "outstanding." The midfielder is currently under contract with Liverpool until 2028.

Prior to this performance, Mac Allister stated that he felt sadness regarding the lack of a new contract offer from the club during the summer.