CREATE TABLE table_72156 ("No." FLOAT, "Date" TEXT, "Tournament" TEXT, "Winning score" TEXT, "To par" TEXT, "Margin of victory" TEXT, "Runner ( s ) -up" TEXT)

Where is the margin of victory dated mar 28, 2004?
SELECT "Margin of victory" FROM table_72156 WHERE "Date" = 'Mar 28, 2004'
SELECT "Margin of victory" FROM "table_72156" WHERE "Date" = 'Mar 28, 2004'