My brother plays in the Men’s Senior Baseball League. Like most of us, it is full of people who love their sport and want to compete in it regardless of age, and even if limited by injury. The league includes former professional baseball players, former professionals from other sports, men who love baseball and want to play despite no chance at a profession, and guys like my brother who chose professional careers and to keep baseball fun despite having opportunities to have careers in baseball (coaching.) Just a wide variety. The following rule is established by their national federation:
> Players that will need courtesy runners must have their manager notify the opposing manager and home plate umpire at the home plate meeting. Otherwise, the opposing manager has the right to refuse the courtesy runner. Each team will be allowed a maximum of two players per game who can be classified as needing a courtesy runner. Each time a designated player reaches base, he will call time out and at that point will be replaced by the last batted out.
No justification and dispensation needed- my brother used a courtesy runner when he had an injured hamstring, for years he had a guy well past retirement on his team who wasn’t up to running, sometimes a team just has someone who is painfully slow.
Baseball is still a sport, but these aren’t the major leagues - this is hobby competition people are paying to do. Much like USEF dressage competitions.
All the local leagues for various sports have even more relaxed rules because they know the value of including everyone. I think most of us agree well ridden sitting gaits tend to get the best balance and quality out of a horse. But posting with a back injury or recovering from an injury and not ready to sit yet or a horse is extra tense and needs posting to not go acrobatic - it doesn’t matter, we all know the ideal and that none of us are going to be ideal, as even Olympic riders gave yet to score as ideal. So why not make the sport the best it can be for every one of us? I’m hopefully nowhere near needing this rule, but if I did I sure would be glad for it, and without it USEF and USDF would never see any more of my money.