user: ### NOW ANSWER:
Question: Who was the runner-up for the event that ended with a winning score of –15 (66-67-70-70=273)?
Columns: ['Date', 'Tournament', 'Winning score', 'Margin of victory', 'Runner(s)-up']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Aug 7, 1994', 'NIKE Dakota Dunes Open', '–12 (74-68-69-65=276)', '2 strokes', 'Rex Caldwell , Gary Webb']
SQL:

assistant: SELECT "Runner(s)-up" FROM "Table" WHERE "Winning score" = '–15 (66-67-70-70=273)';