Radar graphs – an explanatory note

Some of you may follow Ted Knutson on Twitter and have noticed his player radars.  These struck me as a brilliant way of visualising a player’s impact in games, so I decided to start working on them for Derby’s players. What I didn’t realise was that Knutson, a professional analyst who has worked for Brentford FC, makes it look a lot easier than it actually is to create the charts.  Nevertheless, I pressed naively on, using only Microsoft Excel and data sourced from whoscored.com.

At this early stage, my efforts are very basic and there are things that I already know need improving – but it will take me a while to work that out.  In the meantime, I think they give at least a basic impression of different players’ styles and impact and hopefully, you will find them interesting.

Here is a graph of Tammy Abraham’s season, as an example (compare it to the Rams’ strikers radars and take a look at what we could have won…)

ABRAHAM
The values shown are the player’s average per 90 minutes he was on the pitch.  I haven’t provided graphs for players who played significantly less than 1,000 minutes this season – this includes Blackman, Shackell, de Sart, Camara and Lowe.  I felt that they had played insufficient minutes for ‘per 90 minutes’ values to be usefully produced.

Attackers

Non-penalty goals – Penalty goals are excluded – I bow to Knutson on this.  His reasoning is that penalties result in goals about 75-80% of the time, pretty much regardless of who takes them, so he strips them out.

Chances created – The player’s combined total key passes + assists

Key passes
– Classified by Opta as a pass which results in a shot being taken (without scoring)

Dribbles – Refers to successful dribbles, not total attempts

Int + tackles – The player’s combined total interceptions and successful tackles

Midfielders

Long balls – Successful long passes

 

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