CREATE TABLE table_66883 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" CLOB, "Record" CLOB)

Who lost the game with a record of 20-13?
SELECT "Loss" FROM table_66883 WHERE "Record" = '20-13'
SELECT "Loss" FROM "table_66883" WHERE "Record" = '20-13'