In the 3rd round of the Champions League against Olympiacos, the average age of Barcelona's starting lineup is 23 years and 214 days.
Idman.Biz reports with reference to Opta Sport that this is the third youngest starting lineup in the history of "Blaugrana".
According to the source, the other times the Catalan team took the field with a younger starting lineup were in the Champions League in 2002 against Club Brugge (22 years, 362 days) and in December 2011 in a match against BATE (23 years, 93 days).
The Barcelona - Olympiacos match is held at the Estadio Olympique Lluis Companys in Barcelona.