Anthony Elanga scored a rare club goal as Nottingham Forest beat Chelsea at Stamford Bridge for the first time since January 1995.
Elanga, brought on in the first half due to an injury to Danilo, calmly slotted in the game's only goal three minutes after the break when he raced onto Taiwo Awoniyi's pass following a defensive mix-up. It was Elanga's first strike in 44 club appearances stretching back to February 2022.
Chelsea had made a bright start to the match but struggled to create many clear-cut chances and it was Forest who missed the two best opportunities before half-time through the in-form Awoniyi.
Mauricio Pochettino introduced new £42.5m signing Cole Palmer and the returning Mykhailo Mudryk as he looked for a way back into the contest and he almost found one, but Nicolas Jackson could not hit the target from a few yards out late on.
Thiago Silva also went close as the clock ticked towards the final whistle and Raheem Sterling drilled an effort wide deep into stoppage time, but Forest held on for a famous victory - their first at Chelsea in over 28 years.
The result lifted Forest to ninth in the Premier League table, while Chelsea fell to 11th after their second defeat of the campaign.