Credible sources? Part of the issue is that there are no credible sources. Does anyone trust USADA or USTAF? Or the NCAA, that is now a Kenyan semi-pro league? That is why the silent ban issue is so insidious. It destroy what little trust remains in the sport. Anyone looking at the events of the last few months, the sudden influx of internet discussion about a positive test that did not start on this site and then what followed, especially coupled with her no fatigue performances, has a very credible basis to think something is amiss. A silent ban makes sense.