Written by: Jonny Grossmark - November 12, 2012

Betting Tips | Trading a game | How long can your team hold the lead?


In this post I am going to explore the average time it takes a Premier League team to fight back from a goal down, comparing this to the average time that a Premier League team tends to hang on to a lead.

Firstly, I’ll set out the parameters that I used in assessing these statistics:

  1. In order to make this research as topical as possible, I chose to use data from this season. You are welcome to check the corresponding data from past seasons. While the sample size may be too small for some purposes, in this study I am aiming to predict a trend that is forming. For that reason, I chose to ignore data from previous seasons, as teams change and strategy changes.
  2. In order to make all samples equal, have not included minutes added to either half of a game.
  3. For a game to be included in the sample,
    a) both teams must score, one must take the lead, the other must equalise. For example, 0-1 becomes 1-1, 3-2 becomes 3-3, and so on.
    b) if a team scores to take the lead and then scores a second goal (taking a two-goal lead), I have not utilised this data.

In essence, I am interested to see how long it takes a team to “fight back”, to equalize in the game, and how long a team can hold on to maintain a lead (“survival”).

The T shows the time of the goal that breaks the deadlock (the goal to take the lead) and the time of the goal that results in the “fight back” (ties the score) (T+1).

The equation T+1-T, then, gives us the total time that it takes to tie the game again. T average is the average amount of time it takes to tie the game in all applicable games this season.

We can see that Aston Villa have the best survival rate at 37.33 minutes and Norwich the worst at 5.5 minutes.

Arsenal, Manchester Utd, and Swansea do not have a T average as  this season thus far ,  none of the games that these teams have played have involved them relinquishing a lead in the conditions that I have identified above.

From a trading point of view, this survival analysis can be used to your advantage.

Let us look at three games which will make it easy to understand the point. Hypothetically, let’s say that Southampton are 1-0 up against Swansea after 64′ minutes. In this instance, you might look at the T average of Southampton: 25.4. As Southampton have scored first, the data suggests that on previous occasions the opposition team should score (on average) somewhere around 25 minutes later. You might, then, place a bet forecasting the equaliser as soon as Southampton score , anticipating that they will hold the lead for around 25 minutes. All you do is ‘lay’ Southampton at 1-0. ‘Lay’ means to take the view that Southampton will not win the game.

Should the anticipated goal (Swansea’s) be scored then you back Southampton to win, since the price will now be bigger, so you cannot lose should the “fight back” occur. In this case Swansea score T+ 9 minutes, well within expectation of a goal by Swansea. If Swansea do not score then your bet is lost.

If we look at Everton vs Sunderland, we see that Sunderland scored after 45 minutes, so T is 45. If I look at the Sunderland T average I see that it stands at 37.25, which is  higher by comparison to the rest of the Premiership where the T average of all the teams is 25.  I can back Sunderland after 45 minutes and close my position during the second half by laying at a shorter price as time decays.

It is up to you how long you will wait. The longer you wait the more profit you can lock in but there is also the danger of a goal by Everton before you close your position. In this game Everton scored on 77 minutes (T+32, which is very close to the average for Sunderland).

Let’s take the Villa vs Man Utd Game. Villa have a T average of 37.33, which is the highest in the Premiership. When Villa score on 45 minutes you simply back Villa to win, calculating that if Man Utd score then it will not be until some time into the second half. When Villa scored on 50 minutes you would have been rewarded, as the price of Villa to win is much shorter than when you backed on 45 minutes at 1-0. In this case, all you would do is lay (back against Villa) and close your position and lock in a profit. You no longer care care what the final score is as you win whatever the outcome. In essence, you back the team that scores first when they have a high T average and then trade out during the game and lay (back against) a team when they have a low T Average as soon as they score.

Imagine that you lay (back against) Southampton and the goal is not scored within their T average. You can close your position, reducing your loss by backing Southampton at a shorter price. If you bet £10 and leave it and the bet loses then you lose £10. If you lay (back against) Southampton to a fixed liability of £10, backing Southampton a few minutes later if the score still stands at 1-0, then you will reduce your loss.

The majority of people think of betting as having a flutter on, say, Liverpool before a game, but there is really no advantage doing that. You can gain advantage by trading during a game, which means opening and closing positions, a model of trading the stock market.

Very few people back the draw and the bookmakers love that because they are aware of the “fight back” data.

This season the most common Full-time score is 1-1 at 16.16% so it’s no surprise to see why 1-1 is priced so low every week in your local bookmaker’s. 2-2 comes in third at 10%. This is possibly trend forming, and maybe we should be backing some 2-2 correct scores. Or will the 2-2 revert back to the mean (ie will there be fewer such scorelines as the season progresses)?

Last season 2-2 was just 3.68% and 1-1 was top with 11.84%

In conclusion, I hope that I have got you to think about your betting, and to see that trading can be a much smarter alternative.

Team T Average
Arsenal N/A
Aston Villa 37.33
Chelsea 21.5
Everton 18
Fulham 19.6
Liverpool 16
Manchester City 34.66
Manchester United N/A
Newcastle 37.25
Norwich 5.5
QPR 29
Reading 29.4
Southampton 25.4
Stoke 30.66
Sunderland 37.25
Swansea N/A
Spurs 15
WBA 21
West Ham 20
Wigan 31.75




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About the Author

Jonny Grossmark
My first taste of football in a stadium was Gillingham V Aston Villa 1971 and I still have the programme which cost 5p. I have been lucky to have seen a number of Cup Finals but missed the Sunderland goal in 1973 as I was in the toliet. I have recently been watching Margate and also watch around 50 other matches a month on my computer .




 
 

 
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6 Comments


  1. Jonny Grossmark

    Just to say T average is correct up to games before Weekend of 10/11 November 2012.


  2. Jonny Grossmark

    I hope you like this blog. ESPN have just published a similar blog on the lines of comeback without the data. I enjoyed writing this blog the most thus far. I looked at all the academic research papers and my aim was to produce a blog in a way that can be used in your trading so I hope I do not get too many OK’s as I put everything into this blog.


  3. Jonny Grossmark

    google espn” comeback” and you will find it.


  4. Amer Singh

    Excellent article. Brilliant research and insight.

    Note to editor: This man should be getting payed for this!


  5. Hi Jonny,

    Thanks for putting that together, is a nice analysis. I trade quite extensively so often examine similar types of data. For certain types of analysis it’s fair enough to disregard data from previous seasons for the reasons you outline. However, a good way to see if this is for the best in this instance (and more generally) is to examine the data from the first quarter/half of prior seasons and see how much they correlate with the rest of that season. Given the sample size is quite small you ideally want to do the same over a few seasons to see if any statistically significant trend can be identified after x games. There are also occasions where specific stats from one season, or the latter half of it, are certainly indicative of likely outcomes in the following season(s). You mentioned draws, and working out if the bookies price on draws are out of line in specific games is just one such example of this.

    Also, I’d disagree that there’s no advantage backing (or laying) an outcome pre match. If the market for whatever reason presents an opportunity where the price is too high or too low taking advantage of that either with view to trade in game or to just let the bet run because it objectively represents value is certainly worth taking.


  6. Jonny Grossmark

    You make good points betterbettor. I am not a fan of backing a team pre KO. A good example is say Chelsea v Sunderland 0-3 FT. If you back Chelsea pre ko it is clear IR that you are going to lose that bet. I like to wait till HT so I can see how both teams are playing. Better to miss the “value bet” then get caught out with the losing value bet.



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