United and xG (now that Ole is gone will things change?)

Tarrou

Full Member
Joined
May 13, 2013
Messages
25,635
Location
Sydney
Both. A top-quality striker like Ronaldo will ensure a high xG because his movement makes other players find him very easily. In contrast, someone like Martial makes life harder for the team, because he is static so finding him in a good position to shoot becomes very hard.
they can't both be the bigger factor
 

Godfather

Full Member
Joined
Feb 18, 2007
Messages
29,940
Location
Austria
That is and has never been true. It is just frustrated people who have had enough of 8 years of shit on a stick football, no trophies, despite spending more than any other team bar Barcelona and perhaps City. With Ole being here for more than 2 and a half years, having a higher net spent than any manager in the world during that time, and still playing shit on a stick football and going nowhere near big trophies.
This. Don't think there's a single United supporter out there that enjoys seeing us lose just to be "proven right". Whatever that means anyway.
 

b82REZ

Full Member
Joined
Jun 27, 2011
Messages
9,350
Location
Manchester
Well if you compare xg for and against for the first 5 games last year compared to this year it's night and day but that would be silly as the sample size is tiny.

I'm not seeking to shoot down any debate about the manager at all. I just think it's a bit early to draw too many conclusions about the season just yet. New players are still bedding in, some injured ones aren't back and everyone's still building match fitness so I'll start paying attention to these things somewhere around 10 games in but by all means work away.
I agree we shouldn't draw conclusions about this season until we're at least a third of the way in. However there has been a consistent pattern that we start slowly under him.

We've got through a couple of games by the skin of our teeth, and looked uninspired. A trend that goes back two seasons.

I agree we generally hit our stride a dozen games in, but that is unacceptable if we aspire to ever win the league, which we should be doing this season with the money we've spent.

Do you honestly think his style of football is sustainable at the top level?
 

Revan

Assumptionman
Joined
Dec 19, 2011
Messages
49,635
Location
London
If the metal tanks are imaginary, then yeah.
Caveman opinion. There is a reason why xG is considered important virtually everywhere. By far the best statistic we have (although far from perfect).
 

sullydnl

Ross Kemp's caf ID
Joined
Sep 13, 2012
Messages
34,063
Nobody ever won the league with xG. Ergo it's a load of horse shit.
And weather forecasts don't rain on anyone either. People who pay attention to them are still less likely to find themselves wet though.
 
Joined
Jan 1, 2021
Messages
875
And weather forecasts don't rain on anyone either. People who pay attention to them are still less likely to find themselves wet though.
:lol:

Always get a couple of people in discussions like this that are seemingly annoyed by stats and a little too eager to point out just how little they matter
 

Tarrou

Full Member
Joined
May 13, 2013
Messages
25,635
Location
Sydney
xG is just data

I'm not sure what people think is going on when they say they don't believe in it
 

cyberman

Full Member
Joined
May 26, 2010
Messages
37,331
Caveman opinion. There is a reason why xG is considered important virtually everywhere. By far the best statistic we have (although far from perfect).
The best statistic we have is the goals for and against columns to be fair
 

Revan

Assumptionman
Joined
Dec 19, 2011
Messages
49,635
Location
London
The best statistic we have is the goals for and against columns to be fair
No, we don't. We had the same argument in 2019, where people who pay attention to this were saying that it will soon go very wrong. We then got eliminated out of UCL, and ended the season by winning 5 points in the last 7 matches, well outside of the UCL zone. Some people were wondering what went wrong, when the picture was very clear that it was always going to end that way.
 

Borys

Statistics Wizard
Joined
May 10, 2013
Messages
9,095
Location
Bielsko Biala, Poland
The best statistic we have is the goals for and against columns to be fair
xG is the best indicator to predict results though. You can tell which teams are on the lucky/unlucky side and what to expect in next games. Just looking at goals will not tell you that.
 

cyberman

Full Member
Joined
May 26, 2010
Messages
37,331
No, we don't. We had the same argument in 2019, where people who pay attention to this were saying that it will soon go very wrong. We then got eliminated out of UCL, and ended the season by winning 5 points in the last 7 matches, well outside of the UCL zone. Some people were wondering what went wrong, when the picture was very clear that it was always going to end that way.
We went out to defensive errors, not XG. We scored 2 goals away from home in a game we could draw to qualify and lost. We scored a goal away in Turkey where we defended like schoolboys on the halfway line. We scored at home to PSG, controlled the game then conceded from a set piece. We scored in all of those games, it was the defensive end that let us down.
Second top scorers last season, top scorers so far. We score our way out of problems. Our attacking play carries us from defensive blunders to get wins.
XG was never a problem and it hasn’t caught up to us. It’s defending set pieces and covering the back post that has been our glaring issue
 

Brophs

The One and Only
Joined
Nov 28, 2006
Messages
50,452
It’s how you analyse it though. Taking the numbers as if they’ve done the work for you and have presented it on a plate is as disingenuous as pretending it doesn’t matter.
https://www.twenty3.sport/xg-what-is-it-explained/
Agree with that. The likes of Michael Cox and Rafa Honigstein present xG as a definitive statement of the game, when it's just a tool for understanding what you've watched. To me, that seems one of the issues with it. It's being sold (by some) as having cracked the code of football.
 

Revan

Assumptionman
Joined
Dec 19, 2011
Messages
49,635
Location
London
We went out to defensive errors, not XG. We scored 2 goals away from home in a game we could draw to qualify and lost. We scored a goal away in Turkey where we defended like schoolboys on the halfway line. We scored at home to PSG, controlled the game then conceded from a set piece. We scored in all of those games, it was the defensive end that let us down.
Second top scorers last season, top scorers so far. We score our way out of problems. Our attacking play carries us from defensive blunders to get wins.
XG was never a problem and it hasn’t caught up to us. It’s defending set pieces and covering the back post that has been our glaring issue
I was talking about the interim season of Ole (mentioned 18/19). People were convinced that we are being magnificent, when it was clear that we were just super-lucky. And then the inevitable regression to the mean happened.

The same thing is going to happen this season, unless we significantly improve. We had a very good start in the league (although a very easy schedule playing against 4 teams that are in the bottom 5 places, and one in eighth place), but the xG has not been showing it (i.e., we have been lucky). In truth, just watching the games would result with the same opinion, but it is extra worrying when xG confirms that.

The only constant in Ole's reign is that we have difficulties creating high-quality chances, and xG perfectly confirms that.
 

Zen86

Full Member
Joined
Jul 1, 2007
Messages
13,933
Location
Sunny Manc
And weather forecasts don't rain on anyone either. People who pay attention to them are still less likely to find themselves wet though.
Weather is more predictable than people.

Caveman opinion. There is a reason why xG is considered important virtually everywhere. By far the best statistic we have (although far from perfect).
It's a rough indicator at best and driven by an obsession to quantify. It's "importance" is football hipsterism and something for media outlets to talk about.
 

BusbyMalone

First Man Falling
Joined
May 22, 2017
Messages
10,362
Agree with that. The likes of Michael Cox and Rafa Honigstein present xG as a definitive statement of the game, when it's just a tool for understanding what you've watched. To me, that seems one of the issues with it. It's being sold (by some) as having cracked the code of football.
Yeah, that's stats in general really. Stats being readily available to almost anyone is both a good thing and a terrible thing. Because, inevitably, most people aren't really going to dive into the minutiae of the stats but instead use it in a way that backs up their own agenda and personal biases. As we've seen on this forum from time to time, whether it's to defend Ole or attack him.

Obviously, stats are useful when used correctly and can be a good indicator of things to come. At the risk of sounding like some sort of luddite, I often find the eye test to be a pretty good indicator of what to expect in long run, and how a team is actually playing. Much in the same way I don't need the weather forecast to tell me it's pissing down when I can just look out the window.
 

Revan

Assumptionman
Joined
Dec 19, 2011
Messages
49,635
Location
London
Weather is more predictable than people.



It's a rough indicator at best and driven by an obsession to quantify. It's "importance" is football hipsterism and something for media outlets to talk about.
Of course, it is an indicator. A far better indicator than the number of shots, or the number of shots in goal, for example.
 
Joined
Jan 1, 2021
Messages
875
Always get a couple of people in discussions like this that are seemingly annoyed by stats and a little too eager to point out just how little they matter
And again.

There's a nice, pleasant balance between "xG is gospel" and "xG is a load of horse shit for football hipsters". Try harder to strike it, please.
 

Schmeichel's Cartwheel

Correctly predicted Italy to win Euro 2020
Joined
Dec 21, 2014
Messages
11,420
Location
Manchester
xG is actually a very good indicator as to how sustainable your form is. As evident by the opening post from 2019, we were massively outperforming our xG, which is a good way to see wether you’re actually a top team or just enjoying a “purple patch / rub of the green” and as we saw we ended up finishing that season horribly.

I disagree when people say xG is useless, it’s a very very good indicator as to where you are & what you can achieve over a 50+ game season.

If we are going to win the league this season we are going to need de Gea, Fernandes & Ronaldo to have unbelievable seasons, because our xG from both scoring & conceded is significantly worse than our title rivals.
 

Revan

Assumptionman
Joined
Dec 19, 2011
Messages
49,635
Location
London
Not as good as watching the game though, is it? Hint: No it isn't.
Probably not. But it would complement watching the game very well, and add more knowledge than just watching the game.

These types of stats might actually be very useful. A striker who consistently outperforms their xG is clinical, even if the eyes do not show that. In the US sports, stats have been used for decades now, starting from baseball when some guy made a team of misfits competitive, even though he didn't even bother watching them play before signing them. In football, it has been mostly in the last 10 years, but top managers like Pep take it seriously.
 

Schmeichel's Cartwheel

Correctly predicted Italy to win Euro 2020
Joined
Dec 21, 2014
Messages
11,420
Location
Manchester
Probably not. But it would complement watching the game very well, and add more knowledge than just watching the game.

These types of stats might actually be very useful. A striker who consistently outperforms their xG is clinical, even if the eyes do not show that. In the US sports, stats have been used for decades now, starting from baseball when some guy made a team of misfits competitive, even though he didn't even bother watching them play before signing them. In football, it has been mostly in the last 10 years, but top managers like Pep take it seriously.
Martial used to outperform his xG every season to be fair. He’s anything but clinical.
 

cyberman

Full Member
Joined
May 26, 2010
Messages
37,331
Probably not. But it would complement watching the game very well, and add more knowledge than just watching the game.

These types of stats might actually be very useful. A striker who consistently outperforms their xG is clinical, even if the eyes do not show that. In the US sports, stats have been used for decades now, starting from baseball when some guy made a team of misfits competitive, even though he didn't even bother watching them play before signing them. In football, it has been mostly in the last 10 years, but top managers like Pep take it seriously.
Is there a link to Pep discussing XG?
 

Revan

Assumptionman
Joined
Dec 19, 2011
Messages
49,635
Location
London
Is there a link to Pep discussing XG?
Man City recently hired a few data analysts, including Laurie Shaw whose CV consists of a PhD in computational astrophysics and writing AI software for hedge funds. He is in charge of their data analysis team.

I think it is very likely that he is taken seriously from Pep Guardiola, otherwise why would City pay millions for their data analysis team.
 

Zen86

Full Member
Joined
Jul 1, 2007
Messages
13,933
Location
Sunny Manc
Probably not. But it would complement watching the game very well, and add more knowledge than just watching the game.

These types of stats might actually be very useful. A striker who consistently outperforms their xG is clinical, even if the eyes do not show that. In the US sports, stats have been used for decades now, starting from baseball when some guy made a team of misfits competitive, even though he didn't even bother watching them play before signing them. In football, it has been mostly in the last 10 years, but top managers like Pep take it seriously.
As others have mentioned, it's heralded as the dawn of a new football age and used as gospel by those who watch highlights on YouTube rather than a 90 minute game of football. You could coin any number of similar algorithms which would look "about right" most of the time. There's an obsession with predictability and quantification in football.
 

Classical Mechanic

Full Member
Joined
Aug 25, 2014
Messages
35,216
Location
xG Zombie Nation
Or maybe he is good at scoring from half chances.
Indeed. That's the rub with Martial and one of the reasons for his inconsistency. When on form he scores a lot of lower probability goals, curling shots from the edge of the box are one of his trademarks. Understanding this through xG helps you to understand the player more. The problem with Martial is that he's never developed the other side of a striker's game through scoring tap-ins and headers etc.
 

Revan

Assumptionman
Joined
Dec 19, 2011
Messages
49,635
Location
London
As others have mentioned, it's heralded as the dawn of a new football age and used as gospel by those who watch highlights on YouTube rather than a 90 minute game of football. You could coin any number of similar algorithms which would look "about right" most of the time. There's an obsession with predictability and quantification in football.
It is not gospel, but it is getting better. Ultimately, I think it will describe the quality of teams better than just watching matches, similarly to how I expect that ultimately autonomous driving is gonna be safer than humans driving cars. In both cases, it is not there yet.

It still is incredibly useful and clubs are making investments in these areas. It could identify interesting things before you get hit by them.
 

sullydnl

Ross Kemp's caf ID
Joined
Sep 13, 2012
Messages
34,063
Not Pep here's Tuchel talking about it a little:

We try to translate it in our own [footballing] language and try not to overdo it with data but to reduce it to important data that corresponds to the style we want to play and fits with our team.

We talk about expected goals clearly because it's a good way to measure your performance, to not get carried away by results, either wins or losses, because in football you depend on luck a huge amount. Sometimes it's good for the coach to not lose his head, sometimes it's good for the players to prove your point, if you have a win to prove it's not enough or the other way around, that we're on the right way.
And here's Klopp referencing it:

The opponent usually doesn’t need a lot of chances against us because we make big mistakes, insane ones that can almost be described as slapstick. On the other hand, we create a lot of chances, in the “expected goals” we are still second behind Man City in the Premier League, but far from them in the ones we actually scored. This problem has been going on throughout the season.
I'm sure Ole gets presented with that same basic data as them too, so he's not going to be unaware of how we've lagged in that regard. Actually improving things is the hard part.