I keep hearing people say this evidence is circumstantial as a way to minimize circumstantial evidence but actually circumstantial evidence is often the best evidence. However, most of the evidence Well's uses isn't really circumstantial evidence, it is just pure speculation on his part.
For instance, Well's asks Jasteremski, McNally and Brady if they did it. They say, "no." That is direct evidence, testimony from people who were there or not there, whatever. This evidence is totally uncontroverted. Nobody says, "I saw them do it." There isn't any video of someone doing it. There is literally no other direct evidence in this case directly tying these three guys to deflating the footballs.And to be fair, we generally don't put much stock in direct evidence like this because, well people lie.
Yet, the fact that McNally took the balls into a restroom on his way to the field and is there for an amount of time I don't think anyone would say isn't consistent with doing what people normally do in a restroom, many people hold that as more evidential than the direct testimony of three people.