As a data scientist who built predictive models for NBA teams, I turned my gaze to football—specifically, the hypothetical swap of Neymar and Bale at Real Madrid in 2013. Using regression trees and player biomechanics, I found that Neymar’s technical efficiency under pressure could have shifted the entire dynamics of La Liga’s title race. This isn’t fantasy—it’s a probability distribution with real-world variables. The question isn’t ‘could he win?’ but ‘how much did he win by data?’