Key Performance Indicators (KPIs) for Football Analysis

By Sergio Almenara

18-March-2021 on Tips

13 minute read

Sergio Almenara is a Spanish football coach and analyst with extensive experience in Finnish football. Currently, he works as an assistant coach at FC Inter Turku, who finished in second place in the Veikkausliiga last season.

 

In a previous article for Nacsport, Sergio talked us through his methodology for opposition analysis in football. In this, the second part of his article, he tells us what he believes to be the most important Key Performance Indicators (KPIs) when scouting out an opponent. 

 

Over to Sergio…

Introduction

 

The KPIs that we are about to look at are those that our coaching staff use to analyse an upcoming opponent. This is done in a way which is complementary to the qualitative video analysis that we carry out.

 

We analyse decision making patterns, movement and formations of the opponent, as well as the dynamics of the team at collective, positional, linking and individual levels, although we may add more if we deem it necessary.

KPIs Vary According to Opponent

 

As opponents play styles and formations differ, so do our KPIs. It is their tactics that guide us, allowing us to focus on one sector or another.

 

But the main objective is alway the same: to discover where and how an opponent can give us problems and how much damage they can do. 

 

Thus, during the week’s planning and training, we can work to neutralise this damage from a double perspective: the qualitative analysis and the analysis of data we collect on the opponent.

 

kpi football coaching staff

 

As in the qualitative phase, we pay special attention to the KPIs which will allow us to make the most of our game plan crossed with that of our opponent. To this end, we try to focus on KPIs on matches where the opponent has faced teams with similar formations or game plans to ours.

 

Importantly, we do not work with a company that goes deep into the data on KPIs, therefore, there are some KPIs we have to pay special attention to, beyond mapping or the data itself. We review all the clips linked to the data and analyse them in more detail to see how useful it is going to be for us.

 

KPIs for Organising Defensive Phase

 

These are some of the KPIs in some of the most common scenarios that come up during our defensive phase. In brackets (...), is how we represent this data. 

 

Goal Kicks

 

•    Frequency of short, medium or long goal kicks (map)


•    Areas of maximum influx of players or goal kicks (map)


•    Players who frequently receive the goal kick and what they do after receiving the ball (map-video)


•    Spatial structure (map)

 

Goal kicks are set piece situations that we work on defending before the match, either in training or analytically. We tend to keep these separate from other set pieces such as corners or freekicks as, for us, goal kicks are more ordered and predictable than the others.

 

From our point of view, these situations help us control the match by forcing the opponent to play the ball in a different way from what they are used to, disrupting their chances of progressing up the field.

 

Example: If the analysis of the KPIs show us that when the opposing team plays the ball short, in terms of percentage of passes, losses in those areas and frequency of attacks, they have less control when the centre-back receives the goal kick.

 

This means that we would adjust the positioning of our players so that the centre-back is given more room and, at the same time, the areas with better statistical probabilities will be filled. This invites the goalkeeper to play it towards the centre-back, who we know is a weak point.

 

From there, various individual and collective pressuring triggers will be activated.

 

If the opposition likes to play the ball long, and we can see from our analysis that they are statistically strong in this area, we will man mark their forwards and midfielders, inviting them to play short. We can then apply high pressure and force errors.

 

Ball in Play: Initiation and Progression

 

•    Spatial structure (map)


•    Passing patterns (map)

 

•    Percentage of errors during build up by centre-backs, focusing on forward passes (map-video)

 

•    Losses in their own half, individuals, special attention to centre-backs and wingers, who loses it and how. Special attention to aerial battles won, if they are an opponent who plays the long ball

 

•    Build up typology of passes and their result (map-video)

 

•    Areas with more attacking frequency compared to areas with more errors in passing (map-video)

 

KPIs in football, various stats

 

KPIs for football, statistics

For us, it is important to know where they usually push and which players they use most frequently.

 

If there is an area with a high percentage of success, we try to cover that area by putting pressure on the lines in order to prevent the opponent from completing passing patterns which they feel most comfortable with and are most dangerous from.

 

In addition, we guide the pressure towards the areas or players where they have less efficiency in passing or progression.

 

Ball in Play: Finishing or Last Third

 

•    xG (expected goals, statistic that indicates the probability that an attack ends in a goal depending on the play)

 

•    Percentage of crosses with shot (map)

 

•    Most frequent areas for crosses compared with percentage of success (map- video)

 

•    Shots and shots on goal (map)

 

•    xA (expected assists, which measure the probability that a pass ends up becoming an assist)

 

•    Zones and players with the best Key Passes percentages (map and video)

 

•    Losses in the last third (map)

 

Football KPIs, zones and players

 

Defending in the low block requires a lot of concentration, due to the proximity to our own goal. Any detail, no matter how small, can help in preventing a scoring opportunity for the opponent. Therefore, we always want our players to know what type of attack our opponents frequently employ and which generate the most danger.

 

KPIs for Organising Offensive Phase

 

In this section we will look at the KPIs we must take into account when organising our attack and how the opponent may organise their defensive block.

 

From a Goal Kick

 

•    Spatial structure


•    Aerial battles by centre-backs


•    Ball recoveries and free ball pick ups


•    Players / zones with the lowest rate of steals, tackles and interceptions

 

We need to know where to direct our attack according to the opponent’s weaknesses. Of course, without the qualitative aspects contained in our databases which complement our work, this would be very difficult to ascertain.

 

Ball in Play: Initiation and Progression

 

•    Spatial structure to detect anomalies in terms of distances between lines, players out of position, height and space for easier attack


•    Ball recoveries and fumbles


•    Zones / players relating to the percentage of defensive battles won


•    Players / zones with the lowest rate of steals, tackles and interceptions


•    Passes Allowed Per Defensive Action (PPDA). Number of Passes made by Attacking Team (opponent) divided by the Number of Defensive Actions


•    Zones <-> players where their rivals progress.

 

In this section, we are interested in finding out where to create progression in our attack, which players are most vulnerable when running at them and the reason for this weakness.

 

Ball in Play: Shooting

 

•    xG (expected goals) received


•    Percentage of crosses where the other team shoots (map)


•    Most frequent areas of crosses by other team (map-video)


•    Kicks and shots on goal by other team (map)


•    Areas with better percentages of Key Passes by other team ( map and video)


•    Recoveries in their area and nearby areas (map)

 

All information about our opponent’s area is good for the players who spend most time there. The important thing is to filter this data and detect where we can take advantage of it.

 

Opposition Goalkeeper Analysis

 

The goalkeeping coach performs a detailed analysis of the strengths and weaknesses of the opposition goalkeeper, amongst which they highlight:

 

•    Percentage of effectiveness


•    Behavior during set pieces

 

KPIs goalkeeper analysis

 

KPIs for Analysing an Opponent's Transitions

 

In this section, we focus on loss and recovery, by zone and by player.

 

Here, the most important aspect is what happens after the loss. We could add more KPIs, but we believe that by analysing zones and players crossed with the video, we obtain a lot of information within the intrinsic chaos of the moment of transition.

 

There are many aspects of defensive and offensive organisation that lead to the later moments in transitions, therefore, some of them will help us to detect patterns when our opponent loses or wins the ball.

 

KPIs for Analysing Set Pieces

 

In Attack

 

•    Most frequent and effective areas / shooters (corners-free kicks-penalties)


•    Type of crosses (open / closed / short)


•    Objectives (players) and their percentages during these actions


•    Spatial structure

 

football kpis free kicks

 

In Defense

 

•    Most frequent areas of the opponent and where they are most effective


•    Type of crosses (open / closed / short)


•    Most effective players in aerial battles


•    Spatial structure


•    Goalkeeping report

 

Conclusion: Information Is Power

 

We always seek to ensure that all the information taken from live analysis, retrospective analysis and data sources is combined in such a way to give the footballer the highest quality information in the most succinct manner.

 

We firmly believe that the combination of qualitative and quantitative analysis of the opponent can lead the team to victory.

 

And that's all from Sergio. We'd like to thank him for taking the time out to write such an informative report for our blog. We'd be happy to answer any questions you might have about the content of this article. Contact us through any of our social media channels.

 

Whilst you're here, if you are interested in using Nacsport for opposition analysis in football, and haven't already done so, why not download a FREE 30-day, no-obligation trial.

You may also be interested in these...

The Nacsport Data Matrix: Everything You Need to Know

26-11-2021 Written by Duncan Ritchie
14 minute read Read more...

Review: AVerMedia Live Gamer Mini C-311

23-11-2021 Written by Duncan Ritchie
7 minute read Read more...

Share this

Did you enjoy this article?

Subscribe to our newsletter and receive a monthly compilation of articles, interviews and Nacsport tips for video analysis.

Thanks for subscribing to our newsletter!

Once a month, we'll send a compendium of our best articles, interview and advice, straight to your inbox. Enjoy!

X
×

Are you enjoying this article?

Subscribe to our newsletter and receive a monthly compilation of articles, interviews and Nacsport tips for video analysis.

Thanks for subscribing to our newsletter!

Once a month, we'll send a compendium of our best articles, interview and advice, straight to your inbox. Enjoy!

Cookies are small text files that are placed on your computer when you visit our website.
They are used to save your activity history in our website so when you visit it again, we can identify you and configure the content based on your navigation habits, your identity and preferences. Cookies can be accepted, rejected, blocked and deleted. You can do this in the following options available in this window or by configuring your browser.
Further info in the Cookies Policy of this website.