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

### Instruction:
What is the fewest total goals scored for players with under 171 league appearances, 151 total appearances, and the DF position?

### Inputs:
table_name: table, columns: ['Name', 'Position', 'Club career', 'League apps', 'League goals', 'Total apps', 'Total goals']

### Response:
SELECT MIN Total goals FROM table WHERE League apps < 171 AND Total apps = 151 AND Position = df