Chelsea pulled a 2-1 comeback victory over Plymouth Argyle to book a ticket to the fifth round of the FA Cup on Saturday.
The Blues were without their manager, Thomas Tuchel, who is currently self-isolating after testing positive for COVID-19.
Macaulay Gillesphey gave Plymouth an early lead after eight minutes to leave the Stamford Bridge faithful silent.
Kevin Nancekivell's side held on to the lead for over half an hour until skipper, César Azpilicueta netted the equaliser in the 41st minute.
The Pilgrims held on to push the game into extra time but lost their lead before when Marcos Alonso scored the eventual winner (105+1').
Plymouth were handed a golden opportunity to drag the game into a shootout when they were were awarded a penalty two minutes before the final whistle.
Kepa Arrizabalaga spared Chelsea's blushes by saving Ryan Hardie's kick to fire the Blues into the next round.
Meanwhile, David Moyes avenged his fourth-round FA Cup 1994 defeat to sixth-tier National League North side, Kidderminster when he was a Preston player as West Ham defeated Russ Penn's side 2-1.
Victory for Kidderminster would have given them a repeat of their best FA Cup run in '94-- to the fifth round -- a memorable campaign that also featured a win against Birmingham, then owned by David Gold and David Sullivan, the current co-owners of Moyes' West Ham.
The Hammers scored two late goals to enter the next round after Alex Penny gave Kidderminster the lead in the 19th minute.
Declan Rice equalised late in regular time (90+1') before Jarrod Bowen scored the winner a few minutes before the game entered a penalty shootout(120+1').