My two best stories:
Middle school, playing as a goalie in soccer, blocked a coach's shot in training which snapped my wrist bone. Kept playing - and then when I told my mom at the end of the day that I broke my wrist she laughed and told me there's no way I could've kept playing if it was broken. Kept on bothering her telling her I was sure the bone snapped, it was starting to swell and bruise, so she took me to the hospital and it turns out I was right.
High school, playing touch football in a brick courtyard. The endzone was a wall, and I ran a go route. Caught the ball within a half-stride of the wall, turned my head and flew into the corner of the wall face first. Friends saw blood 'pouring out of my face' and thought I lost my eye. Fractured my cheekbone, concussed, and have a scar less than a centimetere below my eye. Touchdown counted, though.
Other than that, a few broken fingers, and a really stupid/bad neck injury that still limits my head mobility 10 years later.