Hard men in those days

https://amp.theguardian.com/football/2017/mar/19/bert-trautmann-new-film-nazi-past-fa-cup-manchester-city
This guys pretty interesting.

Today in the wide world of sporf

England Footballer Stuart Pearce once played with a broken leg.
He intentionally kept his boot on to delay the severity of the injury.
Also, Cesc Fabregas famously played on with a fractured leg, and even took a penalty, playing through the pain :)