Attack breakdowns: League 1, 27 Sep 2017

Another graphic that I can justify switching back on at this stage of the season is the club-by-club attack breakdowns. These are explained in detail here, but in summary they are simple scatter graphics that work as follows:

Explanation

Each graphic shows a club’s main attacking players: those who have:

  1. Featured for at least a third of their total pitch minutes in the league this season, and
  2. Taken an average of at least one shot per game.

The size of each player’s bubble is proportional to the percentage of possible minutes that they’ve played.

Each player’s bubble is plotted on a chart with the two axes working like this:

  • On the horizontal axis we have their goal threat, based on the “expected goals” value of shots taken per 90 minutes. This is effectively a measure of the combined quality of their goalscoring chances.
  • On the vertical axis we have their scoring rate, using a less abstract measure of actual number of goals scored per 90 minutes.

Both axes exclude penalties, as those can massively skew a player’s contribution away from the threat they pose from open play.

There’s a shaded “stripe” which indicates the long-term shot conversion rate of all finishers except the top and bottom 10%, so we can identify those whose performance may be unsustainable (i.e. unlikely to be repeated next season). If a player is above the stripe, they’re converting chances at a rate consistent with someone in the top 10% of finishers, and likewise a player below the line is in the worst 10%. Based on what we know about the specific player, we can therefore take a view on whether we expect their scoring rate to continue.

Club-by-club graphics

Shrewsbury‘s Stefan Payne is racking up goals at an incredible rate that is completely in line with the chances he’s getting on the end of, so it’ll be really interesting to see if he can sustain this as he gets more playing minutes. Jack Marriott at Peterborough and Blackburn‘s Marcus Antonsson are also deservedly lighting up the division at the moment.

Wigan have impressed as a team this season but both Ivan Toney and Will Grigg have struggled to find the net this season. Both have had sufficient chances to have merited much higher tallies, but there’s plenty of time for their fortunes to change.

Devante Cole of Fleetwood appears to be in the opposite situation, having scored far more regularly than the chances he’s had would suggest. While the highlights I’ve seen this season suggest that he has great technique for this level, the difference still looks a little high so I expect he’ll cool off a bit. The same may well happen for Kieffer Moore of Rotherham and Oldham‘s Eoin Doyle.