user: Question: Who was the opponent on April 28?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Stadium', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['April 1', '@ Twins', '9–1', 'Bonser (0–1)', 'HHH Metrodome', 24586.0, '1–1']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Date" = 'April 28';