CREATE TABLE table_56307 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" CLOB, "Record" CLOB)

Who was the Mariners opponent at the game attended by 7,893?
SELECT "Opponent" FROM table_56307 WHERE "Attendance" = '7,893'
SELECT "Opponent" FROM "table_56307" WHERE "Attendance" = '7,893'