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Some say every picture tells a story... and that a picture is worth a thousand words...
Below are some graphs, charts and diagrams created by sports statisticians, trainers or competitors to help them to analyse performance, inform training programmes or improve motivation.
For each diagram, we have posed some questions to consider.
Scatter plot showing Federer's first serve landing points
League positions of teams in a football league during a season
"Heat map" showing the position of players in one team in a football match
Image courtesy of Opta
Finishing scores of the top ten athletes in Olympic heptathlon
EXTENSION
Send us examples of particularly good (or bad) representations of sports data, together with your explanation of what makes them good (or bad).