Nico Rosberg, who won his first Formula One Championship after beating his Mercedes team-mate Lewis Hamilton, announced his retirement on Friday.
The 31-year-old clinched the title after finishing second in the final race of the season in the Abu Dhabi Grand Prix.
The reactions to his sudden retirement were largely those of shock but many of his peers congratulated him on a spectacular career.
Here, we list the best tweets following the announcement.
Wow @nico_rosberg retiring as a World Champion..actually what a great way to end a great career. Enjoy your family time.— Johnny herbert (@johnnyherbertf1) December 2, 2016
Extraordinary news from @nico_rosberg... Come on Toto! Do a deal with Mclaren and get Fernando back - now that will be entertaining!!
— Karun Chandhok (@karunchandhok) December 2, 2016
Incredible news about @nico_rosberg retiring from F1. Very brave making that decision.— Juan Pablo Montoya (@jpmontoya) December 2, 2016
“I’ve made it”.— Bleacher Report UK (@br_uk) December 2, 2016
Nico Rosberg on his shock retirement from F1 pic.twitter.com/gWgoot6xiS
— Ralph (@Ralph_E_S) December 2, 2016
Big respect 👏🏻
— Kevin Magnussen (@KevinMagnussen) December 2, 2016
— Marcus Ericsson (@Ericsson_Marcus) December 2, 2016
FINAL STATS: NICO ROSBERG
— Formula 1 (@F1) December 2, 2016