CREATE TABLE table_36778 ("Date" TEXT, "Visitor" TEXT, "Score" TEXT, "Home" TEXT, "Decision" TEXT, "Attendance" FLOAT, "Series" TEXT)

What was the score of the game on April 28 where Buffalo were the visiting team?
SELECT "Score" FROM table_36778 WHERE "Visitor" = 'buffalo' AND "Date" = 'april 28'
SELECT "Score" FROM "table_36778" WHERE "Date" = 'april 28' AND "Visitor" = 'buffalo'