CREATE TABLE table_41644 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

What was the margin of victory when the winning score was 10 (70-72-68-68=278)?
SELECT "Margin of victory" FROM table_41644 WHERE "Winning score" = '–10 (70-72-68-68=278)'
SELECT "Margin of victory" FROM "table_41644" WHERE "Winning score" = '–10 (70-72-68-68=278)'