user: Question: What is the date of the match against John McEnroe with a Score of 3–6, 6–3, 2–6?
Columns: ['Outcome', 'Date', 'Championship', 'Surface', 'Opponent', 'Score']
Types: ['text', 'real', 'text', 'text', 'text', 'text']
Sample row: ['Winner', 1981.0, 'Johannesburg , South Africa', 'Hard', 'Bernard Mitton', '6–4, 6–4']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Opponent" = 'John McEnroe' AND "Score" = '3–6, 6–3, 2–6';