Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_68 (tier INTEGER, postseason VARCHAR)
### Question:
What is the lowest tier for a postseason result of quarterfinalist?
### Answer:
SELECT MIN(tier) FROM table_name_68 WHERE postseason = "quarterfinalist"