user: Question: Which Date has an Opponent of @ Mariners, and a Loss of Hernández (0-1)?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['April 3', 'Yankees', '2-15', 'Zito (0-1)', '35,077', '0-1']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Opponent" = '@ Mariners' AND "Loss" = 'Hernández (0-1)';