If I may…He was an older fellow who had crashed pretty badly in the previous years. In one incident, he went over a guardrail and down an embankment while riding alone in CA. There was no indication that he had been struck by a vehicle. When he came to he had to crawl back up to the road. A passing motorist saw him, stopped and called 9-1-1. In the other, he simply fell over and broke his collar bone. (There were witnesses to that crash.) It probably wasn’t a good idea to take up CX racing after things like that.

I know another guy who had “no fault” crashes. He was in his 70s but still strong. Then he fell down a hill while walking in a park somewhere in Europe. His doctor said his next fall could be his last. After that, his wife (smarty) made him stick to indoor riding.