CREATE TABLE table_21690 ("Athlete" TEXT, "Event" TEXT, "Round of 32" TEXT, "Round of 16" TEXT, "Quarterfinals" TEXT, "Semifinals" TEXT)

Who did Nabil Kassel face in the Round of 32?
SELECT "Round of 32" FROM table_21690 WHERE "Athlete" = 'Nabil Kassel'
SELECT "Round of 32" FROM "table_21690" WHERE "Athlete" = 'Nabil Kassel'