Christian Horner's 20-year Red Bull career - in pictures - ESPN
Christian Horner has been sacked by Red Bull after 20 years as team principal. He oversaw eight drivers' championships and six constructors' championships wins at the UK-based team and all 124 of Red Bull's grand prix victories and 287 podium finishes came under his stewardship.
He oversaw dominant Red Bull runs at the start of the 2010s and the current decade and has been in charge of Red Bull since its inception in 2005. His dismissal comes 17 months after misconduct allegations, as well as a decline in Red Bull's form this season.
ESPN takes a look back at his career in F1 in pictures.
Horner gets his start in F1
The newest team in F1, Red Bull racing — born out of their founder Dietrich Mateschitz's acquisition of Jaguar racing — named Christian Horner as boss in 2005.
The Brit became the youngest team principal in the history of F1 at just 31 years old, a record he still holds today.
First GP win
F1 legend Sebastian Vettel's Chinese GP victory in 2009 was Red Bull's first-ever race win.
Mark Webber took second to secure a Red Bull 1-2 and the team's first taste of success under Horner.
The rain-soaked Shanghai victory marked the start of a Red Bull dynasty as they would go on to win 123 more races under Horner, and Vettel would become a four-time world champion.
Double success
In 2010, Red Bull and Horner cemented themselves as a force to be reckoned with in F1 as they took both the drivers' and constructors' titles.
Vettel started the final race of the season in Abu Dhabi 15 points behind Fernando Alonso at the top of the drivers' standings, but he went on to win the race and ensure both titles were heading to the Milton-Keynes based outfit.
Renault years
After hybrid engines were introduced in F1 in 2014, Red