The UEFA Champions League returned with a bang this midweek as Matchday 3 offered plenty to talk about.

We had big wins for Arsenal ( 4-0 vs. Atlético Madrid ), Paris Saint-Germain ( 7-2 at Bayer Leverkusen ), PSV Eindhoven ( 6-2 vs. Napoli ), Barcelona ( 6-1 vs. Olympiacos ), Chelsea ( 5-1 vs. Ajax Amsterdam ) and Liverpool ( 5-1 at Eintracht Frankfurt ).

We also got drama with Real Madrid squeaking past Juventus 1-0 thanks to a Jude Bellingham winner, and several other big clubs -- like Manchester City and Internazionale -- collected wins to give the top end of the table a rather predictable look.

So what did we glean from the action overall, and what have we learned from these teams? ESPN writers Mark Ogden, Julien Laurens, Tom Hamilt

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