xG is possibly the most misunderstood & misused stat in Football Twitter

A huge section overestimates it & thinks it can be used everywhere

Another huge section underestimates it & doesn't believe in it's use at all

It's important to understand limits of xG

CC - @BeGriffis xG works best when you have a big data sample.

Use of xG for a single shot & single game is good for banter only & should not be used for serious analysis.

I receive multiple DMs like this

I thought it will be interesting to provide a general Idea

1st question is - do you want to be a hobbyist or do you want to make this a career?

You need to seriously think about this

The approach would differ significantly

🧵 If you want to make this a career choice then the important things to learn -
1. python or R programming language.
2. Data science concepts

Otherwise, if you want to remain hobbyist, knowledge of tableau software is sufficient.

🧵

Anatomy of a goal!

Was checking @rscanderlecht vs @UnionStGilloise match this weekend

First goal by @UnionStGilloise was an example of cumulative defensive errors by @rscanderlecht players.

Lets see what I found!

A short thread!

#AndUni
#JPL Beginning of the situation.
A ball in the deep for Union, Union player looking to pass long!Undav (highlighted) was marked by Harwood Bellis (highlighted) who suddenly runs forward to empty space, I don't understand why.
Then he has to quickly turn back he is caught no mans land

Few weeks back I did an opposition analysis using data for 1st time.
It was totally new territory for me. I asked the coaching team what they want and based on that discussion, I presented some slides with help of video analyst. Thankfully, coaching team was happy with it.

1/x I am unfortunately not allowed to share the details in public. So, I have done the next best thing.
I have used the upcoming match between @KAAGent vs @skrapid as an example.
I have created some similar viz that I created for my opposition analysis.
This is pretty basic.

2/x