I dont think it has, I think it started with Mata...Actually, in the same window, we tried Pastore and Modric for insane amount of money! We also had Torres, David and Rambo going for crazy transfer fees! Chelsea started learning only last year, which is great, but if you look at each year since Roman took over, we always had our big share of failure or disapointment. However, this year has been quite posite (Moses, Azpilicueta, Oscar, Hazard, Ba, etc). EDIT: Sorry, I understood years!