My mother used to teach at a community college and had her own run-in with the athletics department in the form of the star women's basketball player that somehow ended up in her class.
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It is an extreme outlier. This is not profs being pressured by coaches. IT is profs taking it upon themselves to create fake courses that weren't actually taught and that anyone could enroll in an get an easy grade for no real work. The investigation found that athletes were not given special treatment within these courses. Everyone got fake grades. This is only incidentally related to the athletics programs, because some of the student advisors who had heard about these fake courses in the AAAS department told struggling athletes to enroll in them for an easy grade.
That's what they said. That doesn't mean it's the truth. I don't believe they created fake courses just to boost grades of the less fortunate.
The more common thing is simply to pass the athlete no matter what, but that can blow up in your face when you find a teacher who doesn't cave. (Of course you can simply get rid of the teacher so it at least doesn't happen again.)