Brentford come over the top of Chelsea 3-0.
Igor Thiago scored his first Premier League goal of the season as unbeaten Brentford scored three times in the second half to beat west London neighbours Chelsea convincingly.
Brentford opened the scoring in the 61st minute as Jaidon Anthony was left unmarked to head home from a yard out after a deep corner had been nodded back across goal by Jannik Schuster.
Chelsea pushed hard for an equaliser but were hit on the counter-attack late on with Kevin Schade sent clean through - and while his tame effort was saved by goalkeeper Emi Martinez, Igor Thiago put the rebound into an empty net.
Substitute Fabio Carvalho added a third to stoppage to wrap up the three points that lift Brentford to third.
Meanwhile, Chelsea are now three league matches without a win - losing two of them - and have failed to score for the first time under Xabi Alonso.
The Blues shaded a forgettable first half with efforts Pedro Neto and Morgan Rogers the closest either side came to a breakthrough.
It was a livelier start to the second half but chances were still scarce until Chelsea failed to deal with a Brentford corner, Martinez deciding against coming for the ball, and Anthony nodded in his first Bees goal.
Chelsea pushed forward looking to level but for all their possession and territorial dominance, clear chances were not forthcoming and, with seven minutes to go, Brentford broke quickly and Igor Thiago doubled the lead.
The game was won but Keith Andrews' side gave a jubilant home crowd more to celebrate in the final moments as Schade's deflected cross was finished at the back post by Carvalho.
