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

### Instruction:
Who was played against when there was a loss and in the gi po round?

### Inputs:
table_name: table, columns: ['Edition', 'Round', 'Date', 'Against', 'Surface', 'Opponent', 'W/L', 'Result']

### Response:
SELECT Against FROM table WHERE W/L = Loss AND Round = GI PO