CREATE TABLE table_57809 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponent in the final" TEXT, "Score" TEXT)

Who is the opponent in the final with a clay surface at the Tournament of Lyneham?
SELECT "Opponent in the final" FROM table_57809 WHERE "Surface" = 'clay' AND "Tournament" = 'lyneham'
SELECT "Opponent in the final" FROM "table_57809" WHERE "Surface" = 'clay' AND "Tournament" = 'lyneham'