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:
| Date | Tournament | Surface | Partnering | Opponents in the final | Score |
| --- | --- | --- | --- | --- | --- |
| March 2, 1992 | Boca Raton , USA | Hard | Conchita Martínez | Larisa Neiland Natasha Zvereva | 6–2, 6–2 |
| September 20, 1993 | Tokyo (Nichirei), Japan | Hard | Amanda Coetzer | Lisa Raymond Chanda Rubin | 6–4, 6–1 |
| October 31, 1994 | Quebec City , Canada | Carpet (i) | Chanda Rubin | Elna Reinach Nathalie Tauziat | 6–4, 6–3 |
| February 27, 1995 | San Juan , Puerto Rico | Hard | Laura Golarsa | Karin Kschwendt Rene Simpson | 6–2, 0–6, 6–4 |
| September 18, 1995 | Tokyo (Nichirei), Japan | Hard | Amanda Coetzer | Lindsay Davenport Mary Joe Fernández | 6–3, 6–2 |
| June 9, 1997 | Birmingham , UK | Grass | Nathalie Tauziat | Katrina Adams Larisa Neiland | 6–2, 6–3 |
Question:
What type of surface was used for the game played on September 20, 1993?
Answer:
Hard