SELECT "Score in the final" FROM table_71911 WHERE "Surface" = 'clay' AND "Tournament" = 'dortmund'
Played on Clay Surface, what was the Score of the Dortmund Tournament?
CREATE TABLE table_71911 (
    "Tournament" text,
    "Surface" text,
    "Partner" text,
    "Opponents in the final" text,
    "Score in the final" text
)