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

### Instruction:
What is the earliest date when the championship was Monterrey WCT, Mexico?

### Inputs:
table_name: table, columns: ['Outcome', 'Date', 'Championship', 'Surface', 'Opponent', 'Score']

### Response:
SELECT MIN Date FROM table WHERE Championship = monterrey wct, mexico