Chelsea's recent 3-0 defeat to Brentford has once again highlighted the deep‑seated defensive problems that have plagued the club this season. Manager Xabi Alonso lamented, "We need to feel it.
We're not feeling it," after the loss, a comment that captures the frustration felt by both the coaching staff and the supporters. The result marks Chelsea's eleventh defeat of the calendar year—a tally that already exceeds the total they suffered in all of 2025, with three months still remaining.
For the fifth consecutive Premier League match under Alonso, the Blues have allowed at least two goals, and their vulnerability on set‑pieces continues to be a major concern. Alonso pointed out a loss of consistency and a missing competitive edge in the second half, noting that Brentford seized the initiative with ease after the break.
This pattern mirrors a broader trend: Chelsea are regularly out‑battled by opponents, a problem that was evident last season when they were outrun in the majority of their league games. The Brentford match reinforced the notion that the team struggles to maintain intensity and structure when the opposition applies pressure. Set‑piece defending was a particular weak point.
The game opened with Brentford delivering a well‑executed corner that found the back post, where the ball was placed directly on top of goalkeeper Emiliano Martínez. Neither the keeper nor the outfield players could react in time, and Brentford capitalised.
This was the fourth goal the Blues have surrendered from a set‑piece in just five Premier League fixtures, raising their total conceded from dead‑ball situations to 23 since the start of last season – the joint‑worst figure among all clubs in the division. Despite appointing Austin MacPhee, widely regarded as the league's leading dead‑ball specialist, Chelsea have not seen any improvement. Former set‑piece coach Bernardo Cueva, now serving in a different capacity, was even targeted by Brentford during the match, underscoring the tactical emphasis both sides placed on these moments. Levi Colwill admitted that the team has been "bullying" at times and needs to raise its standards, while also expressing confidence in the set‑piece coaching staff and acknowledging that the squad is still adapting to new methods.
Yet the defensive shortcomings extend beyond dead‑ball situations. Chelsea have now gone 22 straight Premier League games without keeping a clean sheet, and they concede an average of 2.2 non‑penalty goals per match. Expected‑goals (xG) data suggests that this figure is not merely a product of bad luck; the Blues are statistically likely to allow roughly the same number of quality chances they have been giving up.
The inability to protect the penalty area is especially alarming. Chelsea rank among the top three teams for the number of shots they allow inside their own box, with opponents averaging about ten attempts per game. This relentless pressure forces the goalkeeper into a constant state of siege, often acting as a last line of defence rather than a strategic organizer.
Consequently, the team has struggled to preserve leads, dropping points in their last three league outings despite occasionally starting brightly. In the Brentford game, Chelsea failed to take the lead in the opening ten minutes for the first time this season, although they came close when Pedro Neto saw a chance saved.
When the Blues fall behind, they frequently lose their shape and become disorganised, a point Alonso emphasised: "We concede the first goal, you're still in the game but then we lose the shape. We were out of control." The lack of cohesion is partly due to the absence of key midfield enforcer Moisés Caicedo, whose return could provide much‑needed stability. In his stead, summer signings Jordan Henderson and Valentín Barco started the match, but Brentford's midfield appeared more cohesive and energetic.
Brentford manager Keith Andrews arguably possesses greater depth in that sector, as demonstrated by his side's 3‑0 victory despite benching record signing Mamadou Sangaré for most of the game. From an attacking perspective, João Pedro has emerged as Chelsea's most influential scorer this season, yet the "JP Morgan" front line was dismantled for the first time, and the team failed to find the net altogether.
This underscores the broader issue that the squad is still in a transitional phase. With seven new signings featuring in the starting eleven, Alonso is only the fourth manager to take charge of the club in nine months, and the integration of his tactical philosophy will inevitably take time. Former captain Gary Cahill reminded fans that transformation does not happen overnight, suggesting that Alonso will be judged over the next five to seven weeks as the team trains and attempts to embed his ideas. "We've seen him in an attacking sense," Cahill noted, but the defensive side remains a work in progress.
Alonso himself identified four key areas for improvement: set‑piece defending, defensive duels, build‑up play, and overall game control. While these categories cover much of the tactical landscape, they also highlight how many facets of Chelsea's game require attention.
Levi Colwill echoed this sentiment, stating that the squad has a substantial amount of work to do during the international break. In summary, Chelsea's defensive frailties are multi‑dimensional.
They concede too many goals, struggle to defend set‑pieces, allow excessive shots inside their own box, and lose structural integrity after conceding. Until these issues are addressed—through tactical adjustments, personnel changes, and perhaps the return of pivotal players like Caicedo—the Blues are likely to continue their slide down the Premier League table, leaving fans and the club hierarchy eager for a swift and decisive turnaround.