Chelsea’s Defensive Dilemma: Unpacking the Blues’ Recent Struggles Under Enzo Maresca

Chelsea’s promising start to the 2025/26 campaign has quickly unraveled into a worrying defensive slump. After collecting seven points from their opening three Premier League fixtures and lifting the FIFA Club World Cup in July, Enzo Maresca’s side now finds itself grappling with a series of costly defensive lapses.

From Composed to Chaotic: The Shift in Form

The Blues began the season with a solid defensive record, just one goal conceded across matches against Crystal Palace, West Ham, and Fulham. But since the international break, the backline has been anything but secure. Chelsea have shipped multiple goals in three consecutive outings against Brentford, Bayern Munich, and Manchester United, exposing cracks in both structure and discipline.

Self-Destruction: Individual Mistakes Mounting

Chelsea’s possession-based approach, which emphasizes building from the back, inherently carries risk. But the frequency of errors has spiked alarmingly. In the first three games, Chelsea committed two mistakes that led to shots. In the last four, that number tripled to six two each against Bayern, United, and even League One side Lincoln City in the Carabao Cup.

These errors have directly contributed to goals, red cards, and penalties, including Robert Sanchez’s early dismissal at Old Trafford and Trevoh Chalobah’s own goal in Munich. Chelsea currently lead Europe’s top five leagues in errors leading to shots since September, a damning statistic.

Key Metrics:

• 6 errors leading to shots in last 4 games
• 3 goals conceded from those errors
• 1 red card, 1 own goal, 1 penalty conceded

Tactical Vulnerability: Man-to-Man Pressing Exposed

Maresca’s aggressive man-marking system, especially among center-backs, has been exploited by savvy opponents. Rather than holding shape, Chelsea’s defenders often chase attackers deep into midfield, leaving gaps behind. Bayern’s Harry Kane repeatedly dragged defenders out of position, allowing runners like Konrad Laimer to exploit the vacated space.

Brentford took a more direct route, launching long balls over the top to Kevin Schade and Igor Thiago. The result? Chelsea’s backline was frequently caught out, either numerically or positionally, leading to high-quality chances.

Defensive Stats Since International Break:

• 3.0 big chances conceded per game (highest in PL)
• 2.0 goals conceded per game (3rd highest)
• 1.8 xG against per game (3rd highest)

Set-Piece Fragility: Ball-Watching Blues

Set pieces have also become a soft spot. Both Brentford and Manchester United scored back-post headers with minimal resistance Fabio Carvalho and Casemiro were left unmarked despite Chelsea having numerical superiority in the box. The lack of defensive awareness and poor marking has turned routine corners into scoring opportunities for opponents.

What Needs Fixing?

Chelsea’s defensive woes stem from a combination of tactical risk-taking and individual lapses. While Maresca’s philosophy is bold and possession-oriented, it requires near-perfect execution. Without tightening up decision-making and positional discipline, Chelsea risk undermining their attacking promise with avoidable defensive chaos.

Their only truly dominant performance this season came against a struggling West Ham side. If the Blues are to rediscover consistency, they must first plug the leaks at the back.