SELECT "Winning driver" FROM table_24273 WHERE "Fastest lap" = 'Jamie Green'
Who won when Jamie Green had the best lap?
CREATE TABLE table_24273 (
    "Round" real,
    "Circuit" text,
    "Date" text,
    "Pole position" text,
    "Fastest lap" text,
    "Winning driver" text,
    "Winning team" text
)