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 |
| --- | --- | --- | --- | --- | --- |
| Winner | 1978.0 | London | Carpet | Tim Gullikson | 6–7, 6–4, 7–6, 6–2 |
| Winner | 1978.0 | Stockholm | Hard | Tim Gullikson | 6–2, 6–2 |
| Runner-up | 1979.0 | Toronto | Hard | Björn Borg | 3–6, 3–6 |
| Winner | 1979.0 | London | Carpet | Harold Solomon | 6–3, 6–4, 7–5 |
| Winner | 1979.0 | Stockholm | Hard | Gene Mayer | 6–7, 6–3, 6–3 |
| Winner | 1980.0 | London | Carpet | Gene Mayer | 6–4, 6–4, 6–3 |
| Runner-up | 1980.0 | Stockholm | Hard | Björn Borg | 3–6, 4–6 |
| Runner-up | 1980.0 | Philadelphia | Carpet | Jimmy Connors | 3–6, 6–2, 3–6, 6–3, 4–6 |
| Winner | 1981.0 | Cincinnati | Hard | Chris Lewis | 6–3, 6–4 |
| Runner-up | 1981.0 | London | Carpet | Jimmy Connors | 6–3, 6–2, 3–6, 4–6, 2–6 |
| Winner | 1982.0 | Tokyo | Carpet | Peter McNamara | 6–3, 6–4 |
| Winner | 1982.0 | London | Carpet | Brian Gottfried | 6–3, 6–2, 6–4 |
| Winner | 1982.0 | Philadelphia | Carpet | Jimmy Connors | 6–3, 6–3, 6–1 |
| Runner-up | 1983.0 | Cincinnati | Hard | Mats Wilander | 4–6, 4–6 |
| Winner | 1983.0 | London | Carpet | Jimmy Connors | 7-5, 6-1, 6–4 |
| Winner | 1983.0 | Philadelphia | Carpet | Ivan Lendl | 4–6, 7–6, 6–4, 6–3 |
| Winner | 1983.0 | Forest Hills | Clay | Vitas Gerulaitis | 6–3, 7–5 |
| Winner | 1984.0 | Toronto | Hard | Vitas Gerulaitis | 6–0, 6–3 |
| Winner | 1984.0 | Stockholm | Hard | Mats Wilander | 6–2, 3–6, 6–2 |
| Winner | 1984.0 | Philadelphia | Carpet | Ivan Lendl | 6–3, 3–6, 6–3, 7–6 |
| Winner | 1984.0 | Forest Hills | Clay | Ivan Lendl | 6–4, 6–2 |
| Winner | 1985.0 | Stockholm | Hard | Anders Järryd | 6–1, 6–2 |
| Winner | 1985.0 | Montreal | Hard | Ivan Lendl | 7–5, 6–3 |
| Winner | 1985.0 | Philadelphia | Carpet | Miloslav Mečíř | 6–3, 7–6, 6–1 |
| Runner-up | 1985.0 | Forest Hills | Clay | Ivan Lendl | 3–6, 3–6 |
Question:
Name the championship for 1980 hard surface
Answer:
Stockholm