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_22587192_1 (year INTEGER, mens_singles VARCHAR)
### Question:
What is the least year when men's singles is Raju Rai?
### Answer:
SELECT MIN(year) FROM table_22587192_1 WHERE mens_singles = "Raju Rai"