Chelsea's Champions League campaign suffered a significant blow on Tuesday night as they fell to a 2-1 defeat against Atalanta. The loss, extending their winless streak to four matches, leaves their hopes of progressing to the knockout stages hanging in the balance.

The match, held at Stadio di Bergamo, saw Chelsea initially take the lead, raising hopes of a crucial away victory. However, Atalanta mounted a spirited comeback, inspired by Charles De Ketelaere, to secure a vital win.

Chelsea's starting lineup featured Robert Sanchez in goal, with a defense comprising Josh Acheampong, Marc Cucurella, Reece James, Trevoh Chalobah, and Benoit Badiashile. The midfield consisted of Pedro Neto, Moises Caicedo, Joao Pedro and Enzo Fernandez, while Jamie Gittens led the attack.

Despite Chelsea gaining some ground in the last few minutes, Atalanta dominated in the second half, controlling the game and pressing higher. De Ketelaere took charge of Atalanta in the second half, just as Raffaele Palladino had highlighted on the eve of the match, seeing him as a true leader for the team. Atalanta's comeback was a testament to their resilience and tactical adjustments made during the match. Goals from Scamacca and De Ketelaere secured the victory for the Italian side, overturning Chelsea's early advantage.

The defeat leaves Chelsea in a precarious position in their Champions League group. With upcoming fixtures against tough opponents, they will need to regroup quickly and find a winning formula to revive their chances of reaching the next round.

The match was officiated by referee Alejandro Hernández from Spain, with Cesar Soto Grado as the Video Assistant Referee. The loss represents a setback for Chelsea and manager Enzo Maresca, who will need to address the team's performance and strategize for their remaining Champions League matches.