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:
| Club | League | Sport | Venue | Established | Capacity |
| --- | --- | --- | --- | --- | --- |
| Real Madrid C.F. | La Liga | Football | Santiago Bernabéu | 1902.0 | 85454.0 |
| Atlético Madrid | La Liga | Football | Vicente Calderón | 1903.0 | 54851.0 |
| Rayo Vallecano | La Liga | Football | Estadio de Vallecas | 1924.0 | 15500.0 |
| Real Madrid Castilla | Segunda División | Football | Alfredo di Stéfano | 1930.0 | 6000.0 |
| Real Madrid Baloncesto | ACB | Basketball | Palacio de Deportes de Madrid | 1932.0 | 16000.0 |
| CB Estudiantes | ACB | Basketball | Palacio de Deportes de Madrid | 1948.0 | 16000.0 |
| BM Atlético Madrid | ASOBAL | Handball | Palacio Vistalegre | 2011.0 | 15000.0 |
Question:
What is the league established before 1930 with the rayo vallecano club?
Answer:
La Liga