user: Question: When was –16 (62-71-71-68=272) the winning score?
Columns: ['Date', 'Tournament', 'Winning score', 'Margin of victory', 'Runner(s)-up']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Sep 12, 1971', 'Southern Open Invitational', '–13 (65-67-68-67=267)', '5 strokes', 'Deane Beman']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Winning score" = '–16 (62-71-71-68=272)';