The UEFA Champions League's knockout phase will kick off on Tuesday, February 11-12 with the return legs to be played the week after, on February 18-19 and will determine the eight teams that will face the first eight sides that already qualified in the League Phase.

How does it work?36 sides entered into the new "league phase," and now there are 24 remaining. 8 have already gone through to the round of 16, while sides finishing 9th through 24th are headed to the first knockout round — the playoff.