Chelsea just suffered a 0-3 defeat to Chelsea in the Premier League last weekend. Before that, they had lost to Everton (0-3), PSG (0-3) and lost to PSG again with a score of 2-5. In the remaining match between this series, The Blues also lost with a score of 0-1 to Newcastle.
In the match against Man City last weekend, The Blues conceded 2 goals very quickly in the 51st minute (Nico O'Relly) and 57th minute (Marc Guehi). This is the 5th time Liam Rosenior's team has conceded 2 consecutive goals in just 10 minutes, a very alarming sign. In fact, in the defeat to Man City, Jeremy Doku's 3rd goal also came only 11 minutes after Guehi scored.
Further back, Chelsea also conceded 2 goals in just 10 minutes when facing Napoli, but in that match The Blues won. However, conceding 2 goals in a row has long become a disease of the London team, not just in the past month.

So what caused Chelsea to continuously fall into a state of losing so quickly? The absence of a player who can play aerial combat well to limit the opponent's long balls when counter-attacking is a key factor. When the opponent plays long balls over the line to deploy counter-attacks, the players who often fall into aerial combat are Marc Cucurella. From there, Chelsea's defense system is constantly breached.
Not being in high form and having to play too many arenas also exhausted The Blues. In the disastrous month, they had to play 3 arenas: Champions League, Premier League and FA Cup. In addition to physical fitness issues, in his post-defeat speeches, Liam Rosenior also talked about issues he could not control such as emotions and the maturity of his players' competitive psychology.
There are no easy problems to solve for Liam Rosenior at this time. The English coach came to replace Enzo Maresca quite urgently, while he did not have time to prepare. In this sprint stage, preparation is a luxury, just rushing into continuous battles from week to week. Rosenior will not be able to change anything big, just playing in a match-of-match style.

Chelsea's season is declining terribly. Before Man United revived under Michael Carrick's hand, Chelsea had a time of warming up to step into the championship race with Arsenal and Man City. Now, they are the weakest team compared to Man United, Aston Villa and Liverpool in the Champions League ticket race. Not to mention the chasing group behind such as Brentford also has the potential to knock out Chelsea if they continue to decline uncontrollably as they are now.