Write SQL query to solve given problem: Who is the youngest player to have won the Purple Cap?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.Player_Name FROM Player AS T1 INNER JOIN Season AS T2 ON T1.Player_Id = T2.Purple_Cap ORDER BY T2.Season_Year - SUBSTR(T1.DOB, 1, 4) LIMIT 1