Several years ago I had an elderly patient who was an excellent competitive trap-shooter. He came to my office one day with this specific complaint: "Last weekend I was missing targets and losing to guys who have no business beating me".
He had no other symptoms and had a normal neurological exam, but related that he had fallen a few weeks earlier and sustained a small scalp laceration which was sutured at an ER. His CT scan subsequently showed a subdural hematoma so I referred him to a neurosurgeon for treatment.
When he returned four weeks later for followup he reported, "I'm fixed Doc, I'm beating those guys again".