What was the latest stage won by Mikhail Ignatiev? 
CREATE TABLE table_25802618_15 (stage INTEGER, winner VARCHAR)
SELECT MAX(stage) FROM table_25802618_15 WHERE winner = "Mikhail Ignatiev"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25802618_15 (stage INTEGER, winner VARCHAR) Question: What was the latest stage won by Mikhail Ignatiev?  [/INST] SELECT MAX(stage) FROM table_25802618_15 WHERE winner = "Mikhail Ignatiev" </s>