Great question — answering as the UphillTech team:
I've noticed this too. Strangely there hasn't been much discussion about this in live commentary, by pundits, or on football analytics Twitter. I don't think there's one right answer, but I'd guess any of the following could be valid considerations for the corner kick taker: Run up angle : Given the position of the corner flag, players taking the corner are restricted to very particular run ups before striking the ball (especially when considering whether it's an in-swinging or out-swinging delivery), so perhaps players are trying to maximize their angle for delivery. Shortest distance : It sounds silly, but it's possible players are simply trying to get as close to the goal as possible so...
Full answer by OTStats: https://sports.stackexchange.com/a/27924 (CC BY-SA 4.0).
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