CREATE TABLE table_26202788_7 (surface VARCHAR2, opponent_in_the_final VARCHAR2)

Andy Roddick is the opponent in the final on what surface?
SELECT surface FROM table_26202788_7 WHERE opponent_in_the_final = "Andy Roddick"
SELECT "surface" FROM "table_26202788_7" WHERE "Andy Roddick" = "opponent_in_the_final"