CREATE TABLE table_name_21 (season VARCHAR, score VARCHAR, winners VARCHAR)
SELECT season FROM table_name_21 WHERE score = "2–1" AND winners = "rangers"
เรนเจอร์สชนะด้วยสกอร์ 2–1 ในฤดูกาลใด?
In which season did the Rangers win with a score of 2–1?