user: Question: beyond 2001, what is the lowest asts from a pos of sf?
Columns: ['Player', 'Pos.', 'From', 'School/Country', 'Rebs', 'Asts']
Types: ['text', 'text', 'real', 'text', 'real', 'real']
Sample row: ['James Bailey Category:Articles with hCards', 'F/C', 1987.0, 'Rutgers', 210.0, 42.0]
SQL:

assistant: SELECT MIN("Asts") FROM "Table" WHERE "Pos." = 'sf' AND "From" > 2001.0;