What is the largest number Lost to david nalbandian with a Win Rate of 20%?
CREATE TABLE table_name_91 (lost INTEGER, win__percentage VARCHAR, opponent VARCHAR)
SELECT MAX(lost) FROM table_name_91 WHERE win__percentage = "20%" AND opponent = "david nalbandian"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_91 (lost INTEGER, win__percentage VARCHAR, opponent VARCHAR) Question: What is the largest number Lost to david nalbandian with a Win Rate of 20%? [/INST] SELECT MAX(lost) FROM table_name_91 WHERE win__percentage = "20%" AND opponent = "david nalbandian" </s>