CREATE TABLE table_36114 ("Date" TEXT, "Opponent" TEXT, "Score" TEXT, "Loss" TEXT, "Save" TEXT, "Attendance" FLOAT, "Record" TEXT)

Who was the opponent when the Phillies played on April 28?
SELECT "Opponent" FROM table_36114 WHERE "Date" = 'april 28'
SELECT "Opponent" FROM "table_36114" WHERE "Date" = 'april 28'