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_23259077_1 (year INTEGER, opponent_in_the_final VARCHAR)
### Question:
On what year did Newcombe first face Clark Graebner in a final match?
### Answer:
SELECT MIN(year) FROM table_23259077_1 WHERE opponent_in_the_final = "Clark Graebner"