I don't want to lend credence to stupid rumors, but Brazier's case points out flaws in our current drug testing system.
The NCAA and it's member institutions are not WADA signatories. Their drug testing does provide some level of deterrent to college athletes, but it doesn't "count" in the big picture because the results are not reported to USADA or WADA, and as far as I can tell athletes rarely receive any kind of sanction close to what they would from USADA.
Brazier did not join USATF until June 2016. That means that USADA _could not_ test him prior to that point even if they wanted to. USADA does not have jurisdiction over American college athletes who are not USATF members unless they are in the OOC testing pool.
He skipped out on Juniors and did poorly at the Olympics Trials, USADA recorded 0 tests for him in Q3, so they definitely did not test him at either meet.
He has finally recorded a test in Q4, which almost certainly means he is in the OOC testing pool and will be tested regularly from here on out.
But shouldn't that first test have occurred last spring when he first ran insanely fast?
I'm not trying to imply that I think he is dirty. It's just that our country gets heralded as being pretty good in the anti-doping department, yet we have these concerning gaps in our coverage...
USADA likes to test middle distance athletes quite a bit, so hopefully he continues to improve and any concerns or rumors anyone had can be laid to rest.
I want the system to be fixed so that those concerns never pop up in the first place...