CREATE TABLE table_name_91 (round INT, opponent VARCHAR, location VARCHAR)

What is the highest round of the match with Rene Rooze as the opponent in Saitama, Japan?
SELECT MAX(round) FROM table_name_91 WHERE opponent = "rene rooze" AND location = "saitama, japan"
SELECT MAX("round") FROM "table_name_91" WHERE "location" = "saitama, japan" AND "opponent" = "rene rooze"