Ahhh tag... we are in the middle of that one too.
DD was diagnosed with dyspraxia (along with dyslexia, dysgraphia, math disability... all wrapped into a "NLD-ish" diagnosis) so I assume somewhat similar. We don't have any formal accommodations for PE but it tends to be an issue at recess and last year at the bus stop too. DD is the also the kid most easily caught and who finds it impossible to tag someone else. She wants to be included but really - how much fun can it be for her? Anytime there is a tag related game - especially in a co-ed situation - DD is the slowest. Inevitably there is a kid who can't catch anyone. DD is the last one still running to "base" - by this time the other kid is good and frustrated and "tags" her really, REALLY hard out of his own frustration. So now she is the slowest, the loser and injured. Not good.
We have actually found tag to be an entree point for bullying. Last year there was a kid who kept tagging her, then tagging her really hard, then eventually hitting her, then organizing the other boys to pick on her too. The recess aides were oblivious - they just saw kids playing tag. DD started isolating herself at recess to avoid it but I could not get anyone at the school to believe me. This was a major contributor to her school anxiety getting so bad last year. The first week of school this year the major offender organized a group to "hunt" DD and trapped her in a bounce house during the welcome back picnic. Finally they conducted an official bullying investigation. And it all started with tag last year in first grade. Earlier this week I was in school for a function and one of DD's friends pulled me aside to tell me that the boys were being really mean to DD at recess. DD tried everything she could to stop her and denied that anything was happening. Yesterday she finally broke down and told the SW and me that - you guessed it - it all started it with a game of tag. DD said she didn't want to play and the boys kept "tagging" her (I don't know how hard but I can guess...) and taunting her. Different kids, different class, different grade - same issue.
I did mention to the SW that since DD now has a diagnosis of dyspraxia if this continues I will explore it as a "disability harassment" situation especially if it gets physical like it did last year.