Wednesday, 9 January 2013

Analysis of Clean Sheets: First Half Season vs. Second Half

I have been a little surprised at the preference for the expensive defenders in my recent wildcard teams and have received a few comments to the same effect so I have taken a look at the number of clean sheets achieved in the first half of the season compared to the amount achieved in the second half for the last 8 seasons in the Premier League.
The following chart is pretty conclusive.  In all but one of the last 8 seasons (2006/07) the number of clean sheets increased  in the second half of the season compared to the first half - an average increase from ~100 clean sheets from the first 180 games to 120 in the last 180.

Furthermore, it's the home teams that see the most improvement in this respect with an increase of 22% compared to away team's 12%.

Looking at the number of clean sheets in the table below, so far this season clean sheets have been low for the league but not been as rare as you perhaps might have first thought, on a par with the last three seasons.


Conclusion: Don't overlook defensive points through the latter part of the season.

Data sourced from Football Data

Number of clean sheets per seaon in 1st half and 2nd half of season







1st Half 2nd Half 1st Half 2nd Half

1st Half 2nd Half Home Home Away Away
2004/05 99 120 59 76 40 44
2005/06 116 128 71 80 45 48
2006/07 117 116 72 62 45 54
2007/08 99 119 59 67 40 52
2008/09 108 139 57 89 51 50
2009/10 93 128 58 80 35 48
2010/11 91 100 60 66 31 34
2011/12 94 112 51 74 43 38
2012/13 91
59
32
2nd Half Avg. Increase
+18%
+22%
+12%

2 comments:

  1. Great stuff man, im looking at more investment in defense for sure. I wish you could do some kind of analysis on defenses that have overperformed or underperformed. In terms of conceding goals from shots on target/shots inside the box. Compared to the leagues averages.

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  2. I will have a team-by-team analysis ready for posting in the next day or so. Stay tuned!

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