CREATE TABLE table_51075 ("Date" TEXT, "Opponent" TEXT, "Venue" TEXT, "Result" TEXT, "Attendance" FLOAT, "Competition" TEXT, "Man of the Match" TEXT)

Who did they play when there were only 751 in attendance?
SELECT "Opponent" FROM table_51075 WHERE "Attendance" < '751'
SELECT "Opponent" FROM "table_51075" WHERE "Attendance" < '751'