Brentford earned their first ever win over Chelsea in the Premier League on Friday after a 3-0 victory at the GTech.
The hosts move up to third in the table ahead of the rest of the weekend's fixtures and remain unbeaten in the Premier League this season.
It was a puzzling display for Xabi Alonso to ponder after watching his team impose themselves on the hosts in the first half yet struggling to find a goal threat, before succumbing in the second period to goals from Jaidon Anthony, Igor Thiago and Fábio Carvalho.
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It's been another eventful week behind the scenes at Chelsea with the news that co-owners Todd Boehly and Mark Walter have sold their stakes in the club.
Boehly and Walter have sold their stakes in Chelsea -- having each owned 12.83% -- to give Clearlake Capital -- which previously held 61.5% -- full control of the London club.
The consortium bought Chelsea in 2022 for £2.5 billion ($3.3 billion), with a further £1.75 billion ($2.3 billion) committed to investment. The club's sale came after former owner Roman Abramovich was sanctioned by alleged ties to Russia president Vladimir Putin following the country's invasion of Ukraine.
Swiss philanthropist Hansjörg Wyss, who also owned a 12.83% stake, will remain a partner in the ownership group, the club has confirmed.
Chelsea manager Alonso said it was time to "move on together."
"I think it is an important day for the club when there is an important change in the structure of the club, new ownership," Alonso told a news conference on Thursday.
"Thanks to the former owners for what they have done. I was not here but I know that they played an important role. And now that Behdad [Eghbali] is taking more control, or almost full control, I think it is good that the main one is clear."