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 | 1991.0 | Frankfurt | Carpet (i) | Jim Courier | 3–6, 7–6 (7–5) , 6–3, 6–4 |
| Runner-up | 1993.0 | Frankfurt | Carpet (i) | Michael Stich | 6–7 (3–7) , 6–2, 6–7 (7–9) , 2–6 |
| Winner | 1994.0 | Frankfurt | Carpet (i) | Boris Becker | 4–6, 6–3, 7–5, 6–4 |
| Winner | 1996.0 | Hannover | Carpet (i) | Boris Becker | 3–6, 7–6 (7–5) , 7–6 (7–4) , 6–7 (11–13) , 6–4 |
| Winner | 1997.0 | Hannover | Hard (i) | Yevgeny Kafelnikov | 6–3, 6–2, 6–2 |
Question:
Who is the opponent in the final when frankfurt is championship and the year is less than 1993.0?
Answer:
Jim Courier