1. It is not impossible to prove. Think of this scenario, the UT student population has contracted the virus at, let's make up a percentage, say 5%. The football team has a virus rate of say 25%, well its pretty likely that football had a disproportionate rate compared to other students. Compare that to another football team, let's say Alabama, that Tennessee played. It also has the same disproportionate rate and it is logical that football was the cause. Multiply that by other football teams and you have causation, There is a term of art in the law, res ipsa loquitur, it means the thing speaks for itself. This would be especially true if a student athlete can show that the school did not follow CDC guidelines and/or its own policy. Think about that, have you tried to apply the CDC standards, it changes almost daily and it is very hard to follow and comply with. So think about doing this for an entire Athletic Department. It will not be easy.
I do agree, somewhat with Saban, it may be that it could be safer if all the standards and policies are followed. But that is certainly a big IF. Hard to do.
2. You are correct damage is an essential element to a negligence case. This is the new scenario that caused the Pac-12 and Big 10 to cancel their season. In rare cases the virus causes (potentially) a serious heart condition. So think of someone like Henry T, that has a very bright financial future. He contracts the virus and it causes this heart condition and it prevents him from playing in the NFL for life. If that situation plays out the damage component is very significant. Candidly that is an extreme case and the heart condition is rare and, as I understand it (I am not a doctor) it comes from a lack of treatment from the virus., BUT if it does happen and Henry T could prove it was obviously contracted from playing football and UT failed to diagnosis it properly and treat it.............. well we are talking millions of dollars for him alone. Add one or two more and it is devastating. This is why small colleges/universities canceled initially, the risk reward is way too high for them. Maybe not for the SEC, but we will see.
I fully expect waivers and releases to be mandated that try to disclaim liability. Those will only be as good as the work the universities and SEC implement to keep these kids safe. It also raises other legal issues as to whether these student-Athletes are now employees or independent contractors and what do they get for signing the waivers that was different than what they got before they had to sign them. So it makes sense that some conferences and schools have chosen not to answer these questions, it is very complicated. A lot of legal and moral issues to take on. So it is not really easy just to say there is no liability because we don't know where you got it from. There are other avenues to prove it and then there is the public relations nightmare of being in a lawsuit with your former players, just a bad look all together.