In addition, a team's wide midfielders block Chelsea's full-backs, their own full-backs should be free to either become an extra man in midfield or provide additional defensive cover.

另外，边前卫去拦截切尔西的边后卫时，他们自己的边后卫就可以不受干扰，应该要么成为中场的额外一人，要么提供附加的协防保护。