Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
what is the debut when the play er is radoslava topalova and the years played is less than 2?

### Inputs:
table_name: table, columns: ['Player', 'W-L (Total)', 'W-L (Singles)', 'W-L (Doubles)', 'Ties', 'Debut', 'Years Played']

### Response:
SELECT AVG Debut FROM table WHERE Player = radoslava topalova AND Years Played < 2