The final four quarter-finalists will be decided after this week’s batch of fixtures.
We already know half of the quarter-finalists in this season’s UEFA Champions League, and the remaining four will be decided once the last tranche of ties are concluded.
Here are some key talking points ahead of the second week of round of 16 second legs.
This week’s fixtures
Tuesday 12 March
Arsenal vs Porto
Barcelona vs Napoli
Wednesday 13 March
Atlético de Madrid vs Inter
Dortmund vs PSV
All kick-offs 21:00 CET
Arsenal’s round of 16 struggles
It was a familiar story for Arsenal as Galeno’s stunning late winner condemned them to a 1-0 defeat in Porto. The Gunners have now lost their last seven first-leg matches at this stage, and have not progressed beyond the round of 16 since the 2009/10 season, being knocked out at this point on seven occasions since then.
They will be desperate to change that narrative in London in what should be a fascinating return. “I think it’s about keeping our heads,” said midfielder Declan Rice. “It’s hard to concede that leg. Knowing how we play at home, with our fans and energy, I think you’ll see a team on the front foot from the start and we’ll be looking to do that.”