What was the latest stage won by Mikhail Ignatiev? 
CREATE TABLE "classification_leadership" (
  "stage" real,
  "winner" text,
  "general_classification" text,
  "points_classification" text,
  "mountains_classification" text,
  "young_riders_classification" text,
  "team_classification" text
);
SELECT MAX("stage") FROM "classification_leadership" WHERE "winner"='Mikhail Ignatiev';