Chelsea held off a second-half comeback by Slavia Prague to progress to the Europa League semi-finals with victory in the second leg at Stamford Bridge.
Maurizio Sarri’s side were cruising at half-time with a four-goal aggregate lead before Petr Sevcik produced two sensational strikes as the nerves crept into a previously dominant Chelsea performance.
Buoyed by their noisy supporters, the visitors pushed forward as they tried to force a way back into the game but time defeated them as the Blues regained their composure to close out victory.
Having secured a valuable 1-0 advantage in the Czech Republic, Chelsea raced into a three-goal lead in west London courtesy of goals from Pedro, Olivier Giroud and a calamitous Simon Deli own goal.
Slavia captain Tomas Soucek headed in before Pedro doubled his tally just 63 seconds later.