Debutants Roma, former champions Arsenal and twice finalists Paris Saint-Germain are among the round 2 winners with Bayern or Real Sociedad to join them.
City were on top from the start and in the first 30 minutes Ellen White struck twice either side of a Caroline Weir penalty. On the hour mark substitute Sam Mewis kept up her record of scoring on all three of her European appearances, and she got another with 11 minutes left.
Wednesday 10 March
Atlético had two penalties saved in the first leg and were awarded another spot kick on 75 minutes in Monza, only for Toni Duggan to hit the bar. Virtually straight away Chelsea had a penalty of their own, converted by Maren Mjelde to confirm her side s progress despite Emelyne Laurent s added-time consolation.
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