Hertha took a two-goal lead within 31 minutes in Innsbruck through Santiago Ascacibar and Suat Serdar.
The second-half saw Hertha regain the lead through Stefan Jovetic who headed beyond Adrian to make 3-2.
Van Dijk and Gomez were introduced with 69 minutes on the clock, welcomed with rapturous applause from the crowd.
But van Dijk was unable to stop former Manchester City man Jovetic from restoring Hertha's two-goal advantage.
Alex Oxlade-Chamberlain scored a consolation for his side with two minutes remaining.
But this night wasn't about the result, it was about the return of Liverpool's star defenders, who missed the majority of their Premier League title defence.
After months of hard work together, back on the pitch together
A fitting momentpic.twitter.com/l6WleegrRQ
— Liverpool FC (@LFC) July 29, 2021
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