CREATE TABLE table_53593 ("Date" CLOB, "Tournament" CLOB, "Round" CLOB, "Ground" CLOB, "Opponent" CLOB, "Score 1" CLOB)

Which opponent had round 1?
SELECT "Opponent" FROM table_53593 WHERE "Round" = '1'
SELECT "Opponent" FROM "table_53593" WHERE "Round" = '1'