user: Question: What is the highest round of the match with rene rooze as the opponent in saitama, japan?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Loss', '2-4', 'Rene Rooze', 'TKO (punches)', 'Inoki Bom-Ba-Ye 2003', 1.0, '0:50', 'Kobe , Japan']
SQL:

assistant: SELECT MAX("Round") FROM "Table" WHERE "Opponent" = 'rene rooze' AND "Location" = 'saitama, japan';