I give you Wayne "Buck" Shelford[^]
Except from Wiki
...was a notable victim of the infamous "Battle of Nantes" in the second Test. Roughly 20 minutes into the match, he was caught at the bottom of a rather aggressive ruck, and an errant French boot found its way into Shelford's groin, somehow ripping his scrotum and leaving one testicle hanging free. He also lost four teeth in the process. Incredibly, after discovering the injury to his scrotum, he calmly asked the physio to stitch up the tear and returned to the field before a blow to his head left him concussed.
This was in the days of "amatuer" rugby too.