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

### Instruction:
Who were the opponents in the match that was played on a hard court and had a runner-up outcome?

### Inputs:
table_name: table, columns: ['Outcome', 'Date', 'Surface', 'Partner', 'Opponents', 'Score']

### Response:
SELECT Opponents FROM table WHERE Surface = hard AND Outcome = runner-up