Chelsea have one half of the job in hand completed as they lead Paris St Germain by a goal to nil in this Champions League quarter final return at Stamford Bridge.
The Blues lost the first leg by 3-1 in Paris and so one more goal would be enough to see them through to the semis.
The crucial breakthrough arrived in the 32nd minute when a long throw in was flicked on by David Luiz and sub Andre Schurrle - who came on for the injured Eden Hazard - drilled home a right footed effort.
There was an excellent chance for Chelsea soon after from a Frank Lampard pass but Gary Cahill fired high and wide when he should have shot on target at the very least.
Before the goal Chelsea had the first clearcut chance with a deflected Lampard free kick which forced a save from the keeper who parried for a corner.
Four players have been yellow carded - Chelsea's Willian and Lampard, PSG's Verratti and Cavani.
In the other game, Borussia Dortmund capitalised on an Angel Di Maria penalty miss to lead Real Madrid 2-0 on the night with a brace from Marco Reus but still trail 3-2 overall.
