F1's governing body on Monday confirmed that Brawn GP drivers have been allocated the lowest race numbers in 2009.
The move, revealed in the final version of this season's official entry list, validates the observations at Albert Park that Jenson Button and Rubens Barrichello have been assigned the last pit garages.
In an earlier provisional list, Force India was assigned the lowest race numbers (20 and 21), with the team formerly known as Honda one spot higher due to finishing the 2008 championship second-to-last.
However, the FIA accepted Brawn's application to race this year on the basis that the Brackley squad is a new entry.
Also confirmed in the final entry list, Felipe Massa has swapped places with Kimi Raikkonen and been assigned the higher race number (3) at Ferrari, and a similar change has occurred at Toro Rosso.