I have looked around for this statistic without luck. I just wondered what percentage of corner kicks actually result in a goal? Not necessarily straight in, but from the same passage of play. I have seen answers (without any references) varying from 2.5% (feels too low) to 32% (surely way too high). Anyone know?
The percent of goals from corners is changing from league to league, for one competition to another and for one year to another. For example on 2010 World Cup 1 goal scored for every 70 corners taken,
but generally the ratio of corners to goals is almost zero.
Take a look at Ratio of Corners to Goal in the EPL
You can see that Fulham who has the best ratio has 0.07 goals for corner.
The most extensive articles I came across it was:
You might be surprised to hear that the ratio of corners to goals is almost nil.
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The chance that a goal will be scored off a corner kick appears to be roughly 3%.
Michael Caley at the Washington Post recently analyzed a set of nearly 13,000 corners taken in the English Premier League between 2011-2013, finding:
(data provided by Opta)
Caley links to a study by Chris Anderson and David Sally at Soccer by the Numbers, which showed that EPL teams converted corners between 0-7% during the 2010/11 season, with the average team converting corners into goals at 2.2%. At that rate, the average team would score by corner kick about every 10 games.