Chelsea's defensive frailties and difficulties on set pieces were on full display under manager Xabi Alonso as Brentford secured a convincing 3-0 win in the West London derby, further highlighting the Blues' ongoing problems at the back. The opening goal came with little resistance from Chelsea. A corner delivered by Mikkel Damsgaard was flicked across the box by Jannik Schuster, and the unmarked Jaidon Anthony rose to meet the ball with a simple header that found the back of the net from just a few yards out.

The goal underscored Brentford's efficiency on dead-ball situations, an area where Chelsea have repeatedly faltered this season. Chelsea responded by pressing higher and shifting to a back‑four formation in an attempt to create a response. The tactical change, however, left them vulnerable to counter‑attacks.

Brentford seized the opportunity when Kevin Schade broke through the midfield line and found himself one‑on‑one with goalkeeper Emiliano Martínez. Martínez managed to make a save, but the rebound fell to Igor Thiago, who slotted the ball home from close range, ending his personal seven‑game goalless streak and giving Brentford a two‑goal cushion. In the dying moments of the match, with the result already beyond doubt, Brentford added a third. Fabio Carvalho, who had been sidelined for nearly a year with a serious injury, finally broke his Premier League duck.

He timed his run perfectly to meet a cross from Schade at the far post and, with no defender in sight, tucked the ball away to complete the scoring trio. The defeat left Chelsea with a total of twelve goals conceded after just five league games – the highest tally in the competition at this stage – and the search for their first clean sheet of the season continues. The defensive record is a cause for alarm, especially given the quality of opposition they have faced so far. Offensively, Chelsea were equally underwhelming.

The absence of the injured Joao Pedro was keenly felt, as his replacement, Danny Welbeck, failed to generate any clear-cut chances. Welbeck's lack of impact highlighted the team's broader creative deficiencies.

In midfield, Moisés Caicedo was also missing, and his stand‑in, Jordan Henderson, made his first start for the club against his former team, but was unable to influence the game in a meaningful way. Cole Palmer showed occasional flashes of promise, but the Blues struggled to build sustained attacks.

The only notable chance came from Pedro Neto, whose early effort in the ninth minute was comfortably saved by Brentford goalkeeper Caoimhin Kelleher. Overall, Chelsea's attacking unit looked disjointed and unable to threaten the opposition consistently. Brentford, on the other hand, have become the first side this season to keep Chelsea from scoring, and they continue their unbeaten run, climbing to third place in the Premier League table. For Alonso's side, this defeat marks their third league game without a win, a worrying trend that underscores the need for rapid improvement.

Key moments from the match include: - 9th minute: Danny Welbeck set up Pedro Neto, whose shot was saved by Kelleher. - 41st minute: Morgan Rogers found space inside the box, but his attempt was blocked by Jannik Schuster.

- 50th minute: Jaidon Anthony headed the ball onto the crossbar; replays showed he was level with the offside line, so the goal stood. - 61st minute: Brentford took the lead when Schuster headed Damsgaard's corner across and Anthony nodded it home. - 82nd minute: Schade broke through for a one‑on‑one, his effort saved, but Thiago tapped in the rebound. - 90+4 minutes: Carvalho completed the scoring, tapping in Schade's cross at the far post.

After the match, Xabi Alonso expressed his disappointment to Sky Sports, stating, "I'm disappointed with the second half and with the result. This is not enough to compete in the Premier League. We were not able to maintain our level for the full 90 minutes and that's why we were punished today. It's about everything – the mentality, the football and the tactical aspects that we need to keep improving.

We can do much better." When asked whether Joao Pedro's absence had a significant impact, Alonso replied, "It's not about looking for excuses. We need to look at each other and know that we have to work and improve because there is still a long way to go.

We got into situations, but we were not precise enough with the final action. That's why we didn't score." Brentford manager Keith Andrews also spoke to Sky Sports, emphasizing the emotional roller‑coaster of football: "I think it's important that you enjoy these nights. There's no point hiding it. There are some tough days in the game, and you've got to enjoy the different emotions.

I felt like there was something bubbling towards tonight. I have this unbelievable calm around the team because I trust them, so it's nice to see it come to fruition. I see humility and hunger within the group every day. We're very respectful of each other, but we're going to get better.

We have to continue improving in this league. We try to push boundaries and be really open with each other. Let's continue on our journey because I'm loving it." The result serves as a stark reminder of the challenges Chelsea face under Alonso, with defensive organization, set‑piece execution, and attacking creativity all requiring urgent attention if they hope to turn their season around.