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:
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
| --- | --- | --- | --- | --- |
| Botswana Defence Force XI | 1-2 | Mbabane Highlanders | 1-1 | 0-1 |
| Arsenal (Maseru) | 4-0 | Eleven Arrows F.C. | 3-0 | 1-0 |
| CD Elá Nguema | 2-6 | Primeiro de Agosto | 2-3 | 0-3 1 |
| LPRC Oilers | 2-3 | Mighty Blackpool | 1-0 | 1-3 |
| ASC Police | 2-2 (4-5) | AS Real Bamako | 1-1 | 1-1 |
| Port Autonome | 0-0 (1-3) | Sporting Clube da Praia | 0-0 | 0-0 |
| Saint-George SA | 2-4 | Al Ittihad | 2-1 | 0-3 |
| Saint-Louis FC | 2-7 | Young Africans | 1-3 | 1-4 |
| Sahel SC | 4-2 | Postel Sport | 2-1 | 2-1 |
| Tourbillon FC | 1-1 | Forces Armées CA | 0-0 | 1-1 |
Question:
What is 1st Leg, when 2nd Leg is 1-3?
Answer:
1-0