Discover and read the best of Twitter Threads about #Alisson

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#Alisson’s #PremierLeague form is an absolute joke! 🔥

He’s faced 7 1v1 situations so far & saved all 7! 🤯

My model predicts an average #PL GK would’ve conceded ~4 goals from those situations by now! 👑

How long do we think he can keep the 100% record? 🤔

#LFC #LiverpoolFC
My model uses a database of #PremierLeague 1v1s to not only calculate the expected save probability of each 1v1 situation but to also predict what the optimal strategy is in each situation & how likely a GK would be to make the save for a given decision (for more see thread👇🏻).
So can #Alisson keep this up?

He obviously cant keep his 100% 1v1 record forever but I think he can keep his way above avg form going as my model finds that #Alisson only decreased the finish difficulty for the opposition striker with his decision making on 1 of the 7 occasions!
Read 3 tweets
Class from #Alisson!

Wonderful decision to wait & react rather than engaging #Pukki!

#Alisson’s improved so much vs long range 1v1s!

19/20 long range 1v1 ExSaves: 6.01
19/20 long range 1v1 Saves: 5 ❌

20/21 long range 1v1 ExSaves: 11.46
20/21 long range 1v1 Saves: 13 ✅

#LFC ImageImageImageImage
So many GKs panic when strikers run in 1v1 (& #Alisson used to be one of them) & feel they have to rush out & immediately & end up gifting easy finishes.

It’s awesome that #Alisson seems to have fixed this weakness in his game because his compatriot #Ederson still hasn’t! 👇🏻
By backing off #Alisson forces #Pukki wider than he would’ve been if he had rushed early & allows his defenders to pressure the ball from behind & forces #Pukki to try to smash the ball rather than having an sidefoot or chipped finish which makes the chance quality so much lower! Image
Read 5 tweets
Ah #Alisson won’t want to see this again!

There’s 2 mistakes here:

1. Positioning: he’s 6yrd out for a central 15yrd shot thus he cuts his reaction time greatly without reducing the effective goal area a lot.

2. Technique: he goes with his hand rather than his foot!

#LIVAVL
Research has shown the optimum GK position for none 1v1 long range shots is roughly 1.5-2yrd off the line

Once a GK starts positioning themselves further out than this the reduced goal area they have to cover doesn’t outweigh the loss of reaction time hence goals like this occur
In this situation though #Watkins’ finish is actually a poor one as he smashes it down the centre, so #Alisson could’ve got away with his poor positioning but he compounded his first mistake by going with his hand rather than his foot!

#PremierLeague #LIVAVL
Read 4 tweets
THREAD:

How important is a goalkeeper’s ability to prevent shots?

Is it of comparable importance to shot stopping ability?

In this thread I will investigate these questions & outline my ExG prevented model using #Alisson as an example.

#PremierLeague #LFC #GKUnion #EPL
Every action a GK performs can be separated into 3 categories:

Save-> here the GK attempts to block the ball going into the goal

Distribution-> here the GK attempts to play the ball to a teammate

Interception-> here the GK attempts to stop the ball from reaching an opponent
Evaluating GK intercepting from public data is difficult as most stats providers split intercepting actions between recoveries, tackles, interceptions, punches, & claims, & the differences between the categories are unclear & not relevant to interception difficulty/importance.
Read 28 tweets
Thread of ALL pictures from tonight:
Read 153 tweets

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