Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_83 (lost INTEGER, matches VARCHAR, win__percentage VARCHAR)
### Question:
Matches of 15, and a Win % smaller than 20 had what highest lost?
### Answer:
SELECT MAX(lost) FROM table_name_83 WHERE matches = 15 AND win__percentage < 20