Chelsea 's bid to secure a spot in next season's Champions League took a hit after they were thrashed 3-0 by fellow European football contenders Sheffield United.
Blades' striker David McGoldrick finally netted his first Premier League goal, slotting home a rebound after just 18 minutes and Oli McBurnie doubled that lead after some shoddy defending.
The Scotland international headed home a cross after nipping in between the two centre backs and Kepa Arrizabalaga was left rooted to his line as the ball sailed past him into the back of the net.
McGoldrick then nabbed his second after Antonio Rudiger made a mess of things when attempting to cut out a cross from Lys Mousset
Not a single one of Chelsea's players came out of the game with any credit and here, Daily Star Sport looks at four of the biggest losers who will be in for a dressing down from Frank Lampard.
The midfielder had the chance to clear his lines in Chelsea's half but looked to dribble the ball away from danger instead.
Sander Berge promptly robbed Mount of the ball and started the move which led to McGoldrick's opener.
Mount was promptly removed at half-time.
The Brazilian has been in good form going forward for the Blues post-lockdown but he was caught out defensively against Sheffield United.
Willian failed to track full-back Enda Stevens, who put in an excellent cross for Oli McBurnie to head past Kepa Arrizabalaga.
The winger also struggled going forward, making 1 dribble and having 0 shots.
Christensen was also caught out for McBurnie's goal, failing to notice the forward and allowing him to get in behind the Chelsea defence and nod it home.
He was also withdrawn at half-time and has been part of a defence which has conceded a mammoth 48 league goals this season, with the likes of 15th placed Brighton and 14th placed Crystal Palace having better records.
If they are serious about challenging for trophies next season, they need to address their back four woes.
With Billy Gilmour ruled out for up to four months after undergoing a knee operation, Jorginho was brought into the starting XI for the first time since football has returned.
The Italian struggled in his first start since February, failing to set the tempo and run the game as he did so successfully for Napoli, with Chelsea's dominant possession amounting to very few clear cut chances.