The Vardy header from today had an xG of 0.01 which means that from the position on the pitch, with the ball being received in that way, his chance of scoring was extremely unlikely. Of all previous situations recorded, 99% of them don't result in a goal.
What made it happen is the absolute clown of a keeper flying out of his goal and the excellent instinct and composure of Vardy. The point being that both of these factors are not normal. The decision from the keeper was extremely unusual. The finish in the circumstances was exceptional.
If you want, you can just say that Vardy took it well and move on. It's a goal so who cares? However, if you do that, you are being lulled into a false sense of security because luck like facing Foster in that mood doesn't continue. A couple of months ago, I warned that our underlying stats were poor but we were getting results against the odds so many thought things were fine. Predictably, the luck ran out and we went on a terrible run.
Vardy is an xG monster. Every season he makes more of his opportunities than the average player in his situations. That's what makes him special. Every season we've had Vardy scoring regularly, we've probably finished about six places above where we would finish with an 'ordinary' striker. It is why our win percentage with Vardy in the side is so much higher than it is without him.
This season Vardy 'should' have scored 9 PL goals from his chances but he's got 14. In contrast, Kane should have scored 20 and he has 16. So, although on paper, Kane has two more goals this season than Vardy, it is Vardy who has been easily the better goalscorer. Especially if you take penalties out of the equation.
Vardy is 22nd in the PL on xG this season sitting just one place above Josh King. Daka (63rd) and Iheanacho (93rd) are way down the list as players that don't exceed their xG but they also don't underachieve. They get about the right number of goals.
That's the challenge we face in a future without Vardy.