CREATE TABLE table_57660 ("Edition" FLOAT, "Zone" CLOB, "Round" CLOB, "Date" CLOB, "Against" CLOB, "Surface" CLOB, "Opponent" CLOB, "Outcome" CLOB, "Result" CLOB)

Who was the Europe/Africa group i's opponent?
SELECT "Opponent" FROM table_57660 WHERE "Zone" = 'europe/africa group i'
SELECT "Opponent" FROM "table_57660" WHERE "Zone" = 'europe/africa group i'