Michael Masi will no longer serve as race director in Formula One as the fallout from the 2021 finale in Abu Dhabi continues.

FIA president Mohammed Ben Sulayem announced on Thursday "an in-depth reform of the organisation of refereeing and race direction" in F1, which was unanimously supported by the teams.

This followed a "detailed analysis" of the Abu Dhabi Grand Prix, where Max Verstappen dramatically beat Lewis Hamilton to the drivers' championship last season.

Verstappen pipped Hamilton in the final lap of the final race, denying his rival a record-breaking eighth title.

However, the Red Bull superstar was only able to stage that late recovery after Masi let the cars between the pair – running first and second but separated by a series of lapped rivals – pass a safety car and allow one lap of racing.

Verstappen, on fresher tyres, prevailed, prompting a protest from Hamilton and Mercedes.

Although that bid failed, there has remained a great deal of discussion around Masi's decision-making, leading to Ben Sulayem unveiling his "new step forward in Formula One refereeing".

The most significant change made by the FIA chief is Masi's removal as race director, to be replaced by two men in Niels Wittich and Eduardo Freitas.

Starting from pre-season testing in Barcelona, the new pair will alternate as race director, assisted by permanent senior advisor Herbie Blash.

However, Masi is not necessarily out entirely, as Ben Sulayem added: "Michael Masi, who accomplished a very challenging job for three years as Formula One race director following Charlie Whiting, will be offered a new position within the FIA."

Other changes include a reassessment of the unlapping procedures that caused such controversy.

"Without the referees, there is no sport," Ben Sulayem said. "Respect and support of the referees is in the essence of the FIA.

"That is why these structural changes are crucial in a context of strong development and the legitimate expectations of drivers, teams, manufacturers, organisers, and of course, the fans.

"I warmly thank all those who contributed to this reform.

"These changes will enable us to start the 2022 Formula One season in the best conditions, and our sport will be even more loved and respected."