Player has head injury, maybe a concussion, maybe just an external bruise. The team doesn’t know for sure, but wants to have player available ASAP. I would make the team within 12 hours of the injury contact MLB that they are putting the player on the DL. There is chance for abuse, but I would rather have it that way than people “forced” to play before we know they are 100%.

The data I linked at the beginning states the player’s positions. Answers first 2 questions.

MLB transactions don’t have how the player was injured, but with the spreadsheet, each concussion could be looked up.

It seems maybe unnecessary to me, to implement such a specific rule with the lack of head injuries that take place throughout MLB. I understand they probably want to give teams incentive to report and treat such medical issues, but limiting the trip to a specific head related injury seems really tricky to regulate and possibly easy to abuse.

is there data for…
injury locations by fielding position?
average injury durations for a location related to fielding positions?
injury locations from a hitting, base running, or fielding situation?
and even a break down for situations of how concussion related injuries usually occur

Nice