user: Question: Which highest Round has a Result of Loss?
Columns: ['Date', 'Result', 'Opponent', 'Location', 'Method', 'Round', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['2001-09-02', 'Loss', 'Chester Hughes', 'Elgin, Illinois, USA', 'KO', 1.0, '5-1-0']
SQL:

assistant: SELECT MAX("Round") FROM "Table" WHERE "Result" = 'Loss';