Hgh has some performance enhancing properties (also some deaging and skin revitalization properties which is why it’s popular with Hollywood stars in their 40s and 50s). But the performance enhancing properties are minimal. To the extent used in late teens as performance enhancing it’s mostly girl athletes (such as track swimming maybe soccer) who are afraid to take testosterone because of the long term fertility and body change issues. The boys post 16 that go to extremes are on testosterone, their growth pretty much done.
Another story. Sunday soccer league has no college scouts and no pro careers on the line. My son had trouble registering for his sunday league because they clamped down on false papers five or so years ago because of the large cheating problem. No produce a birth certificate pic on your phone with your friendly club registrar. You have to go to this insurance office next to a kfc in San Fernando with a photo doc (such as passport or national id card), birth certificate (with the apostile if non U.S.), and a school id with photo. My son’s school had stopped giving out school ids (everything is digitized on the phone). They made him go back and bring his year book the next day.