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

### Instruction:
What is the lowest average finish having top 5s of 0?

### Inputs:
table_name: table, columns: ['Year', 'Races', 'Wins', 'Top 5', 'Top 10', 'Poles', 'Avg. Start', 'Avg. Finish', 'Season Rank']

### Response:
SELECT MIN Avg. Finish FROM table WHERE Top 5 < 0