CREATE TABLE table_9216 ("Tournament" TEXT, "Surface" TEXT, "Week" TEXT, "Winner and score" TEXT, "Finalist" TEXT, "Semifinalists" TEXT)

what is the surface when the winner and score is gustavo kuerten 6-4, 7-5, 7-6(6)?
SELECT "Surface" FROM table_9216 WHERE "Winner and score" = 'gustavo kuerten 6-4, 7-5, 7-6(6)'
SELECT "Surface" FROM "table_9216" WHERE "Winner and score" = 'gustavo kuerten 6-4, 7-5, 7-6(6)'