Correct syntax for foreign key constraint for multiple foreign keys

As per this example what is the correct syntax for a foreign key constraint for multiple foreign keys that all reference the same primary key from the referenced table?

ALTER TABLE team
ADD CONSTRAINT fk_team_players
FOREIGN KEY (player_1, player_2, player_3, player_4, player_5, player_6, player_7, player_8) 
REFERENCES player (player_id)