Chelsea manager Thomas Tuchel dedicated his side's first Club World Cup triumph to owner Roman Abramovich after an extra-time win against Brazilian side Palmeiras.
A 117th-minute penalty in Abu Dhabi by Kai Havertz - who also scored their 2021 Champions League winner - means the Blues have now won every possible trophy under the ownership of the Russian billionaire
Romelu Lukaku opened the scoring with a header in the second half before Raphael Veiga levelled from the spot.
Palmeiras defender Luan was sent off in added time as the Blues sealed victory.
"It is for him, there is no doubt that it is for him," said Tuchel of Abramovich.
"We met quickly on the pitch after the final, he said 'congratulations' and I said 'congratulations, it's for you, it's your club and it's your input and your passion that made this possible' and I'm happy to be part of it.
"So of course the trophy is for him."