Multiple knowledgeable-sounding people say something like that, so I'm not really challenging it, but:
Is that generally how it works? If he's ready to rule on 8/31, he has it all written out in final form?
As I said in my OP, I was just stating what I thought based on "no knowledge or information," but yes, I would be very surprised if Judge Berman has not decided how he is going to rule. It's not out of the question that he would have outlined his decision in a conversation with his Clerk after he received the final filings by both sides earlier this week and had a final conversation with the Magistrate Judge. Under those circumstances, the Clerk could have already prepared a draft ruling...but I'm just guessing there.
If I'm right about that (and, as I said, I'm just guessing) and if the Clerk has worked with the Judge for a long time, as is likely the case for a Senior Judge, then s/he will know exactly how he wants the Ruling to read and can probably "finish his sentences" for him. The Clerk would line up all the precedents and prepare the Draft (maybe initially as a Memorandum?). Judge Berman would review the Draft and make his changes. In other words, there is no reason that his ruling could not be completed and awaiting his signature at 9:00 AM on Monday. I think Clerks to Federal Judges are no strangers to working weekends.
The reality is that there is nothing left to be said to Judge Berman by either side that he has not already heard...in some cases
ad nauseam. The only new information he wants to hear from Goodell and Brady is whether they have settled or whether they think they are on the verge of settling if they have x more hours to discuss things.
On that scenario, when Court convenes on Monday, he could announce his intention to rule from the Bench later in the day in the presence of the Principals and then give them a final couple of hours to reach a Settlement before he signs the Ruling and reads it in Open Court.
Or he could wait until the end of the week or express his annoyance at the whole mess by making everybody wait a couple of weeks.