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

### Instruction:
What is the average Finish, when Team is "Buck Baker", and when Start is less than 13?

### Inputs:
table_name: table, columns: ['Year', 'Manufacturer', 'Start', 'Finish', 'Team']

### Response:
SELECT AVG Finish FROM table WHERE Team = buck baker AND Start < 13