The Sevilla team is currently experiencing some instability in their defense, which could potentially impact their performance on the pitch. The key concerns surrounding this issue are high gains and a vulnerable defense system.

One of the main issues that Sevilla is facing is the lack of cohesion between its players. This has led to a breakdown in communication and coordination, making it difficult for the team to work together effectively on the field. This can result in mistakes being made, such as missed tackles or poor defensive positioning, which can ultimately lead to goals against.

Another concern is the vulnerability of the defense system itself. Despite having a strong attacking force, Sevilla has struggled to keep clean sheets in recent matches. This is largely due to the fact that their defense is not performing at the same level as their offense. The team needs to find ways to improve their defensive strategy and prevent opponents from scoring easily.

In conclusion, while Sevilla has been able to achieve impressive results so far this season, they need to address the concerns regarding their defense if they want to continue competing at the highest levels. Improving communication and finding ways to strengthen their defense will be essential for the team to maintain their position in the league standings.