Table schema:
CREATE TABLE table_name_21 (lead VARCHAR, season VARCHAR, third VARCHAR, second VARCHAR)

Question: Which Lead has a Third of randy ferbey (skip), a Second of scott pfeifer, and a Season of 2009–10?
SQL: SELECT lead FROM table_name_21 WHERE third = "randy ferbey (skip)" AND second = "scott pfeifer" AND season = "2009–10"