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

### Instruction:
What was the date for a round that only had 1 match?

### Inputs:
table_name: table, columns: ['Round', 'Date', 'Matches', 'Clubs', 'New entries this round', 'Prize money']

### Response:
SELECT Date FROM table WHERE Matches = 1