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

### Instruction:
beyond 2001, what is the lowest asts from a pos of sf?

### Inputs:
table_name: table, columns: ['Player', 'Pos.', 'From', 'School/Country', 'Rebs', 'Asts']

### Response:
SELECT MIN Asts FROM table WHERE Pos. = sf AND From > 2001