Chelsea’s decision to part ways with head coach Liam Rosenior was underpinned by a sharp and sustained decline in performance metrics, with data showing the scale of the downturn during his tenure.
The club’s most alarming trend is their attacking collapse. Chelsea have lost five consecutive Premier League matches without scoring – their worst such run since November 1912.
It also represents their longest overall losing streak in the competition since November 1993, underlining the severity of the current crisis.
Attack breakdown and historic struggles
Chelsea’s inefficiency in front of goal has been particularly stark. The team has managed just one win in their last nine league matches, collecting only five points in that period, a return better than only Tottenham Hotspur, who have picked up two points over the same span.
Performance data from the recent defeat to Brighton & Hove Albion further exposes the issue. Chelsea recorded a first-half expected goals (xG) figure of just 0.04, the lowest across 114 halves of top-flight football previously overseen by former boss Enzo Maresca.
Additionally, they failed to register a shot until the 41st minute, marking their slowest attacking start in a league game this season.
Defensive vulnerabilities persist
While the attack has stalled, defensive frailties have compounded the problem. Chelsea are now without a clean sheet in their last 12 Premier League matches, one of the longest such runs in their history.
Set-piece defending has also emerged as a critical weakness. The Blues have conceded 11 goals from corners this season, the joint-highest in a single Premier League campaign for the club, matching their 1994-95 record. Only West Ham United have conceded more (15).
Strategic fallout
These metrics collectively show systemic issues across both phases of play, eroding internal confidence in Rosenior’s leadership.
Despite initial backing from the club hierarchy, the data-driven reality left little room for continuity.
Chelsea have since appointed Calum McFarlane as interim head coach, tasking him with stabilising performances while the club undertakes a review to identify a long-term managerial solution.
