CREATE TABLE table_203_780 (id DECIMAL, "rank" DECIMAL, "diver" TEXT, "preliminary\ points" DECIMAL, "preliminary\ rank" DECIMAL, "final\ points" DECIMAL, "final\ rank" DECIMAL, "final\ total" DECIMAL)

who ranked first in the preliminary ?
SELECT "diver" FROM table_203_780 WHERE "preliminary\nrank" = 1
SELECT "diver" FROM "table_203_780" WHERE "preliminary\nrank" = 1