Federer and Nadal re-elected to ATP players' council
The council, as voted by ATP player members, also saw the re-election of Canadian Felix Auger-Aliassime, Australian John Millman, South African Kevin Anderson, Briton Andy Murray and Brazilian Bruno Soares.
In addition, France's Gilles Simon returns to the council having served previous terms, while newcomers Pablo Andujar of Spain and New Zealander Marcus Daniell will serve their first term.
Briton Colin Dowdeswell and Venezuela's Daniel Vallverdu were elected as representatives of retired players and coaches respectively.
It was presided over until last year by world number one Novak Djokovic.
But the Serb broke away in August to establish a new players' association which he said would include women and was intended to bring players together to give them a louder voice in decision-making.