Ian Graham illustrated to Jurgen Klopp how the expected goals metric revealed Borussia Dortmund's true performance during their challenging 2014-15 season, challenging perceptions of luck.
Despite his struggles, Klopp's instinct told him that the team was better than the results indicated, a sentiment backed by Graham's data-driven analysis of the season.
Graham emphasized the prevalence of outcome bias in football, noting that Klopp's unfortunate season was a product of factors like injuries and transfers, not merely failure.
The interaction between Klopp and Graham illustrates how data can reshape a coach’s perception of performance, challenging deeply held beliefs shaped by immediate results.
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