user: Question: Which tournament has a Date of April 20, 1987?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', 'September 30, 1984', 'Honolulu', 'Hardcourt', 'Marty Davis', '1–6, 2–6']
SQL:

assistant: SELECT "Tournament" FROM "Table" WHERE "Date" = 'April 20, 1987';