CREATE TABLE table_6086 ("Date" TEXT, "Visitor" TEXT, "Score" TEXT, "Home" TEXT, "Record" TEXT)

Who was the visiting team when the record was 51 12 4?
SELECT "Visitor" FROM table_6086 WHERE "Record" = '51–12–4'
SELECT "Visitor" FROM "table_6086" WHERE "Record" = '51–12–4'