A night when the record books are lifted from dusty shelves in search of information about Rangers' biggest ever European hidings.
There's been some whoppers. Some fours, some fives, a few sixes. Never in all their time has there been a seven, but here it was, started by Roberto Firmino and finished with a surgeon's precision by Mohamed Salah.
The great man came off the bench and in six minutes and 12 seconds he scored a hat-trick. Don't bother trying to find a speedier treble in the history of this competition - there hasn't been one. Salah tormented Rangers.