CREATE TABLE table_66661 ("Outcome" CLOB, "Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Opponent" CLOB, "Score" CLOB)

What was the tournament that had byron black playing against magnus larsson?
SELECT "Tournament" FROM table_66661 WHERE "Opponent" = 'magnus larsson'
SELECT "Tournament" FROM "table_66661" WHERE "Opponent" = 'magnus larsson'