Discover and read the best of Twitter Threads about #alisson

Most recents (8)

Not a good night for #Ramsdale!

The 4th goal summed it up!

-Engaged the 1v1 when it was 20yrd out & there was a CB covering making the finish far easier

-Using the smother technique rather than the spread technique making the chipped finish far more difficult to save

#ENGvHUN ImageImageImageImage
My 1v1 model shows that engaging 1v1s at distances greater than 14yrds from goal just makes the finishes easier rather than harder

The best GKs (like #Alisson) often wait deep & lure the striker in & then engage the ball once they know they can snuff out the shot!

#ENG #ENGvHUN
My 1v1 model also finds the smother to be very vulnerable when the 1v1 is central as it often allows the GK to be rounded or chipped plus it does very little to cover the side the GK does not have their hands!

A spread wouldn’t drastically increased the Rambos save probability!
Read 6 tweets
My 1st @goalkeeper_com piece:

How many goals were the big 6 GKs worth vs the avg #PL GK?

#Alisson was worth ~19 goals! What more does a GK have to do to get #POTY!

#DeGea was the best shot stopper but his weak shot prevention & distribution meant he was only worth ~3 goals!
#Ederson was the best distributer & his shot preventing was class but his below average shot stopping means his value is far below #Alisson’s!

#Ramsdale’s performances at the end of the season were average but his incredible start means he ended the year with great numbers!
#Mendy was in 2nd place for goal value throughout the year but a poor final few games caused him to drop off, still he was worth ~6 goals to #Chelsea!

#Lloris has gone under the radar this year & while his distribution was pretty weak his shot stopping & sweeping was class!
Read 10 tweets
THREAD:

Today I’ll breakdown #DeGea’s performance in the #PremierLeague using my bespoke GK models!

The headline is for the first time in 3 seasons #DeGea’s shot stopping skills are outweighing his weak shot prevention skills & thus far he has saved #MUFC ~5 additional goals! Image
Shot Stopping:

#DeGea’s shot stopping has been world class, my model predicts he has saved #MUFC ~5 goals more than an average #PL shot stopper would’ve thus far!

The goalmouth map highlights just how hard #DeGea has been to beat, if you don’t hit the corners you won’t score! Image
Shot Stopping:

His Best 3 Saves (Lowest ExSave Saves Made) are below 😮:

1. 24% Save Probability vs Jesus

2. 34% Save Probability vs Almiron

3. 42% Save Probability vs Pukki

They highlight #DeGea big strength, his reflexes & ability to cover huge amounts of the goal area. ImageImageImage
Read 17 tweets
#DeGea’s ability to deal with crosses has quite rightly been criticised.

In the #PremierLeague #DeGea has only prevented 6 opposition chances occurring by claiming crosses!

My model finds this lack of activity means #MUFC concede on average an additional 0.14 ExG every game!
In comparison #Alisson of #LFC has prevented 18 opposition chances occurring by claiming crosses & #Alisson has played 90 fewer minutes!

This difference in cross claiming ability corresponds to #LFC facing on average roughly 0.36 fewer ExG per game in comparison to #MUFC!
Additionally #DeGea’s sweeping numbers have also been low this season.

In the #PremierLeague #DeGea has only prevented 4 opposition chances occurring by sweeping throughballs!

My model finds this lack of activity means #MUFC concede on average an additional 0.07 ExG every game!
Read 9 tweets
#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

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