PPGB and PP90B - a detailed look at how we calculate for our TradingScout EPL Contest tool

Updated: Feb 14

TradingScout contains 2 stats for Footstock that are purposely designed for EPL Contests i.e. real football rather than virtual.

These are:

PPGB – Base Points Per Game

PP90B – Base Points Per 90

This post takes a look at an example of how we calculate these, why they differ from the Footstock PPG values that you see on a player card and how the PPGB differs from the PPGB scores you may be used to seeing on TradingScout for Footstock Virtuals.

How is PPG calculated for the values shown on a players Footstock profile?

We’re first going to use a simplified example to demonstrate how Footstock calculate the PPG shown on a players card/profile.

Let’s assume Jack Grealish has a current PPG of 20.00. This number is calculated as the average of all his PPG scores over (up to) 38 games. However as this average includes games where he may not have played at all or may not have played a full game, it doesn’t really tell you his average PPG for the games and minutes where he was actually playing. This is important because when you pick a player for your Contest teams you do so assuming that the player will be playing, and often assume it will be for the full 90 mins. In addition, this PPG includes all scoring points for the Footstock Scoring Matrix . However we know that the likelihood of some of these events (e.g. goals scored/conceded,) occurring will vary greatly game by game based on the performance of the team as a whole, the quality of the opposition etc. So this may not give us a clear picture of the players average underlying performance or “base statistics”. This is where PPGB and PP90B can help.

PPG - A simplified example.

We've created a simplified example covering 5 mocked up games and showing an example of how we display the stats within our TradingScout EPL Contests tool under the player summary....

In this example Jack’s PPG is the average over the 5 games – so (20+0+20+60+0)/5 = 20. We've mocked up an example of how these points could have been accumulated using some elements of the Footstock Scoring Matrix ...

PPGB (Base PPG) - How we calculate it for Virtuals

We know that Jack won't score and assist in each game for example so we can look at the "base" statistics for his underlying performance by excluding the points which are very specific to a particular game/one-off in match event (see the end of this article for a full list of these).

In this example Jack’s PPGB (for virtuals) is the average of the base statistics over the 5 games – so (8+0+1.5+10.75+0)/5 = 4.05. This is a useful figure to know when picking your virtual teams as you can assess whether they are likely to still score well even if they don't score a goal or have an assist.

However, for real football these stats are heavily skewed as Jack only played in the 3 of the 5 games and only played for a full 90 mins in one game. So we can't easily see his underlying average performance whilst on the pitch. This is where PPGB and PP90B for real football come in...

PPGB (Base points per game) - How we calculate it for EPL Contests (real football)

In this example, Jack’s PPGB (for EPL Contests) is the average over only the 3 games in which he played – so (8+1.5+10.75)/3 = 6.75.

This now gives you a picture of Jack’s base statistics per game played. However as he was subbed on/off in 2 of the 3 games it still might not provide you with a full picture of his underlying stats. This is where PP90B can help....

PP90B (Base points per 90 mins) - How we calculate it for EPL Contests (real football)

To calculate Jack's PP90B (Base points per 90 mins) we need to account for the actual minutes played per game.....

In this example Jack’s PP90B is calculated as Total PPGB/Total Minutes*90 so (8+1.5+10.75)/ (40+60+90)*90 = 9.59.

This gives us a picture of the base statistics that Jack may achieve on average based on playing a full 90 minutes in a game. As you can see, the PP90B figure (9.59) is significantly different to both virtual PPGB figure above (4.05) and the EPL Contest PPGB figure (6.75) and can be very useful to remove some of the "noise" or skewed data if you want to assume the player will play a full 90 minutes. This can be very useful if you know the team lineups ahead of picking your contest teams such as in Footstock Single Contests. It can also help find some hidden gems where players may have been injured, suspended or rotated where the stats visible on Footstock may not provide the full picture.

One area to be mindful of is that if a player only had a small amount of games/minutes played then the statistics may still not be a full and true reflection of that players underlying statistics. So please consider this when using any of the statistics on TradingScout and possibly utilise the scoring breakdown by game on the site.

What’s included and excluded from PPGB and PP90B?

These are the stats from the Footstock Scoring Matrix that we include and exclude from our base statistics for PPGB and PP90B for both EPL Contests and Virtuals.

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