I took a look at the players who featured in the Liverpool v Barcelona match on Tuesday.
Liverpool- 5 English players
Barcelona- 4 Spanish players.
In their overall squads:
Liverpool- 10 English players
Barcelona- 5 Spanish players
Liverpool have as many English players in their squad as...
Pretty sure that hasn't happened before. It was pretty much impossible until the last 20 years or so and I can't remember an occasion.
1989-90 Italy provided all three winners.