SELECT lead FROM table_name_21 WHERE third = "randy ferbey (skip)" AND second = "scott pfeifer" AND season = "2009–10"
LEAD Mana yang memiliki sepertiga dari Randy Ferbey (Skip), yang kedua dari Scott Pfeifer, dan musim 2009-10?
CREATE TABLE table_name_21 (lead VARCHAR, season VARCHAR, third VARCHAR, second VARCHAR)