'It's only pre-season' is a cliche that has been bandied about over the past month or so.
On many levels, the phrase is correct. But, in some cases, friendlies give plenty of signs ahead of the coming campaign.
Indeed, during their first half against Dortmund, the Reds were simply sublime, playing at pace and finding themselves 2-0 up within 13 minutes.
Daniel Sturridge put Liverpool ahead with a fine finish after some superb build-up play. But it was Dejan Lovren's second that will likely steal the headlines.
From a corner, the former Saints defender rose well and headed home to score on his Anfield debut.
Granted, the defending could have been a lot better - but you can't blame the Croatian for that.
So far, so good for Lovren. Now time to produce that kind of form during the Premier League season. The same, of course, applies for the rest of the Liverpool side...
Will Lovren shine for Liverpool this season?