user: Question: What is the highest difference for the team that had less than 0 draws?
Columns: ['Team', 'Played', 'Drew', 'Lost', 'Against', 'Difference', 'Points']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['St Helens', 28.0, 1.0, 4.0, 537.0, 491.0, 47.0]
SQL:

assistant: SELECT MAX("Difference") FROM "Table" WHERE "Drew" < 0.0;