CREATE TABLE table_35953 ("Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Opponent" CLOB, "Score" CLOB)

What is the surface of eckental tournament with a w/o score?
SELECT "Surface" FROM table_35953 WHERE "Tournament" = 'eckental' AND "Score" = 'w/o'
SELECT "Surface" FROM "table_35953" WHERE "Score" = 'w/o' AND "Tournament" = 'eckental'