Should the corner kick be eliminated from soccer?
"The first step was to analyze data provided on the FIFA World Cup website. They provide videos of all goals scored as well as statistics on the number of corner kicks attempted. There were 145 goals scored in the World Cup. Of the 627 corner kicks that were attempted
, 271 connected with an offensive player (43%). Of those, 9 goals were scored from a corner played into the penalty area resulting in a shot.
That’s a ratio of 1 goal scored for every 70 corners taken. Part of the difficulty with this analysis is defining how a goal is scored from a corner kick. Many consider more than one pass beyond the corner kick as free play. Others consider any goal scored where the run of play was initiated with a corner to have resulted from the corner. For example, a poor clearance by a defender that results in a successful shot could be attributed to the corner kick. Likewise a short corner that is touched a few times then played into the box and headed in might also be considered. If you also count goals that resulted from poor clearances (5) and from short corners (2), a total of 14 goals resulted from corner kicks. This brings the ratio down to 1 goal for every 45 corners attempted.
Using this approach, corner kicks accounted for as few as 6% or many as 10% of the goals scored during the 2010 World Cup and corner kicks resulted in a goal once every 4.5 to 7 matches."
I don't know offhand how many matches were played in the World Cup. But that's 9 scores on 627 attempts, give or take.