system
Given the following post, respond as if you're commenting on Reddit:
human
[DC/Marvel] Are there any rules excluding the participation of mutants/metahumans/mutates/inhumans in competitive sports? If so, how can this be policed?

Is there an official standpoint in any competitive sports or international games that bar their participation? The answer might be clear cut in cases of augmented or medicated individuals (so no Caps or Banes) but what about those born with their abilities where it is genetic? Where do you draw the line of inclusion/exclusion and if you do exclude certain types of people how do you control it?
gpt
While many professional sporting associations such as the NFL, the NBA, and other institutions would be quick to adopt rulings against mutant players, there may be a market in the more combat oriented sports, such as MMA or even Wrestling. While such events might be morally grey, there's nothing saying a little blood sport wouldn't go a long way to lining someone's pockets.

There are other issues at play though.

1:) Mutants (and by extension Mutates) are viewed by the general public as public safety hazards at best and vile abominations against nature at worst. Even revealing yourself as a costumed identity cab bring a certain level of stigma and hate, even escalating to death threats and acts of violence. Then there's the problem of occasional government sponsored persecutions and the like. While some elect to go out into the world and show their power without fear, most would just be happy learning how to cope with them and live a normal life.

2:) Anything stronger than a mutant/mutate (such as an Inhuman or Adgardian) likely has better things to do than play games with mortals. They might do it once in a while with human friends, but otherwise such activities would likely be beneath them.