Hope I haven't waited to late!
In my junior year of HS, my then BF's best friend was gifted a Thoroughbred from a second cousin who lived about a quarter mile from said friend. The horse had done a little racing at Remmington Park in OKC, had done well enough to justify keeping him intact and having him stand at stud.
Annnnnd then at 7 or as late as 9 (????) years old, Prince got kicked hard in the coconuts by a mare. He had to be emergency gelded. That's why he was given away to friend. He made an awesome roping horse, believe it or not. He also lived a long and happy life after that.