Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Outcome | Year | Championship | Surface | Opponent in the final | Score in the final |
| --- | --- | --- | --- | --- | --- |
| Runner-up | 1966.0 | U.S. Championships (1/1) | Grass | Fred Stolle | 6–4, 10–12, 3–6, 4–6 |
| Winner | 1967.0 | Wimbledon | Grass | Wilhelm Bungert | 6–2, 6–1, 6–1 |
| Winner | 1967.0 | U.S. Championships (2/1) | Grass | Clark Graebner | 6–4, 6–4, 8–6 |
| Runner-up | 1969.0 | Wimbledon | Grass | Rod Laver | 4–6, 7–5, 4–6, 4–6 |
| Winner | 1970.0 | Wimbledon | Grass | Ken Rosewall | 5–7, 6–3, 6–2, 3–6, 6–1 |
| Winner | 1971.0 | Wimbledon | Grass | Stan Smith | 6–3, 5–7, 2–6, 6–4, 6–4 |
| Winner | 1973.0 | Australian Open | Grass | Onny Parun | 6–3, 6–7, 7–5, 6–1 |
| Winner | 1973.0 | US Open | Grass | Jan Kodeš | 6–4, 1–6, 4–6, 6–2, 6–3 |
| Winner | 1975.0 | Australian Open | Grass | Jimmy Connors | 7–5, 3–6, 6–4, 7–6 |
Question:
On what year did Newcombe first face Clark Graebner in a final match?
Answer:
1967.0