From 3:00 AM, when everyones rosters for the next day become available for all to see, until (usually) about 5:30 or so, they don't display any scores from the previous day while they check everything (I guess) and make them "official".

That's why the scores that JG sometimes posts - before 3:00 AM but after the games all are over - occasionally differ by a point or two from the "official" scores that I usually post in the morning.