Alvaro Morata is not the first Chelsea No 9 to flop at Stamford Bridge, but he is definitely the striker to have suffered the most during his time in west London.
Those who have worn that shirt number for the Blues have endured bad Chelsea records. The likes of Fernando Torres, Radamel Falcao and Tammy Abraham have crumbled under that pressure. There are even concerns about the form of its current holder, Romelu Lukaku, after a slow start to the season.
But Morata's Chelsea story has ultimately revealed how tough life as a first-choice striker can be, while also raising awareness about mental health in football.