user: Question: What was the outcome of the match on August 20, 1978?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Partner', 'Opponents', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', 'August 20, 1978', 'Canadian Open , Canada', 'Hard', "Chris O'Neil", 'Regina Maršíková Pam Teeguarden', '5–7, 7–6, 2–6']
SQL:

assistant: SELECT "Outcome" FROM "Table" WHERE "Date" = 'August 20, 1978';