SELECT "opponent" FROM table_204_868 WHERE "tournament" = 'lenzerheide, switzerland'
who did this player face in her only game in switzerland ?
CREATE TABLE table_204_868 (
    id number,
    "outcome" text,
    "no." number,
    "date" text,
    "tournament" text,
    "surface" text,
    "opponent" text,
    "score" text
)