AIUnderPressure Profile picture
Jul 31, 2020 12 tweets 3 min read Read on X
Thread:
LFC had effectively won the league on Jan 29th after 24 games when we had a 19 point lead (some could argue we had it won earlier than that but there is no argument after GW24)
This thread is going to look at the numbers from those first 24 games when LFC were W23 D1 L0 F56 A15. It is going to ignore everything that happened after as inconsequential. All XG data from understat.com
We have identified 4 critical factors across the 24 games
1) Game State.
In those first 24 games the most important thing to note is that #LFC spent 60% of the time WINNING. This is an almost unprecedented figure in the EPL.
Furthermore, only 8% was spent losing (187 mins)
LFC only went behind 4 times and only conceded 2 goals when leading by 1 goal.
9 of the 15 goals conceded came in "garbage time" when already leading by 2+ goals
2) Defensive Performance when tied/losing
LFC's defensive performance when tied or losing was exceptional conceding just 0.7 XG p90 mins (understat)
7/24 opponents had zero XG when the game was tied
Another 8 had < 0.2 XG
Only one opponent (Southampton) managed >1 XG when tied
3) Outperforming XG when tied
LFC scored 26 goals when the game was tied compared to 16.85 XG, that's a huge overperformance of +9 goals.
Is that unsustainable? On the face of it yes
But now consider that the 26 includes TWO Own Goals and SEVEN set piece goals, mostly headers from FK's/Corners.
That's nearly all of the 9 goal overperformance explained
OG's Norwich, Burnley
Set Plays
Matip v Arsenal
Trent v Chelsea
Mane v Villa
Firmino v Palace
VVD v Brighton
VVD v United
Hendo v Wolves
4) Opposition underperforming XG when behind by 1 goal
Our opponents scored just TWO goals from 9.15 XG when behind by 1 goal
This is the least sustainable of the 4 factors because you simply won't see streaks of opponents only scoring 1/14 big chances ever again
6 of the 14 them were fresh-air shots/mis-kicks under zero defensive pressure. Here's the video clips for your delectation:
Ings
Dunk
Sarr
McBurnie
Pereira
Finally, here's the supporting data collected from the understat match logs /End Image

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More from @AIUnderPressure

Jan 16, 2023
Brighton pod just recorded and out soon. A sad day for us here because we all agreed this is the worst pressing performance we've ever analysed under Klopp.
Thread of images coming up 👇
The intensity, work rate and effort was all there. We tried to roll back the years and do our thing....but the execution was catastrophic
84 failed presses!! 8 failed presses leading to opposition shots. Both unwanted records.
Read 6 tweets
Apr 18, 2022
Latest pod now out covering Benfica 2nd leg and Man City SF
Some huge pressing stories in this one and some images of our unique data coming up
Mane and Salah have had some huge pressing games in the past but both got their career max against City, 47 for Sadio and 49 for Mo (with 14 possession wins!)
Naby Keita delivered the highest possession adjusted figure we've ever collected, 65.1 !!
A tactical look at how out front 6 pressed against City. First of all, Diaz and Salah. Very high and very wide, almost hugging the touchlines
Read 6 tweets
Nov 18, 2021
With the #EPL returning this weekend, it's time for our look at one of the issues affecting #LFC this season: the effectiveness of our systemic press. We think this is a unique perspective using our in-house pressing data
First of all it's worth noting that there are no issues with the intensity or volume of our press. And the production from the press in attack (shots, XG, counter-attacks) has been very good. The issues are on the defensive side, pressers being bypassed and gaps in the chain.
The pressing system is primarily the front 6 with secondary contributions from the fullbacks. This season #LFC have taken a mainstay out of that system (Wijnaldum) while another has played much less (Firmino). The result has been some significant teething problems
Read 15 tweets
Oct 1, 2021
Thread covering our latest podcast discussion on Brentford committing all 10 players at attacking set plays.
What do they know that everyone else (except Midjtylland) doesn't?
Let's start with Midjtylland. This was their claimed performance across 4 seasons starting from their first title win in 14/15.
45% of goals from set plays.
0.75 set play goals per game.
This is what they look like compared to EPL teams in last 5 years. Image
Midjtylland were (and still are) a petri dish for football analytics. Their in house data is only available to themselves...and Brentford.
This image is a study of 20k corners by Michael Caley in 2015. The overall value of a corner is 3% Image
Read 9 tweets
Apr 9, 2021
Real Madrid pod is out and unsurprisingly there is detailed look at our pressing using our unique data. The narrative that "we didn't press" is wrong. We pressed Real 167 times and the Leipzing first leg was 172. The issue was where and how we pressed. THREAD
One of the biggest stories is that Jota playing the centre forward role did not press Kroos once during the entire match. In fact neither Jota or Mane pressed Kroos during the match. Jota and Mane pressed the same people in the same locations (Vasquez, Militao, Modric)
We talked quite a bit about the roles of Mane and Jota when both play and how they interchange from the left. Is it a tactical decision or is Jota still learning the pressing patterns?
Read 8 tweets
Sep 22, 2020
Chelsea podcast recorded and out soon. The most presses we've made in any match for nearly 2 years (260), despite having 61% possession and playing 45 mins with a man advantage. Incredible intensity from the Reds
The most impressive thing about our pressing in was the balance of the system. Coming up are 3 pressmaps and look at the symmetry in the left and right halves of the pitch
1. Mo and Mane. Either high, central inside the oppostion box or to the outside of the halfspaces
2. Bobby and Naby. High and central between the D and centre circle focusing on Jorginho (Bobby) and Kovacic (Naby). Bobby targeted Jorginho 13 times in total and Naby 15 on Kovacic
Read 5 tweets

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