Some individual seasons are simply breathtaking.
But when they happen in a player's debut season with a club, a league or even his career, we can do nothing but stand back and applaud the brilliance we just witnessed.
As much as Arsenal and Manchester City fans won't want to admit it, we've seen one of those incredible debuts seasons with Robin van Persie at Manchester United—scoring goals by the bag-full and leading United back from a title-less season to one of their more dominant Premier League title victories.
Read on to see some of the other great debut seasons in world football.
Note: All statistics and details provided via Transfermarkt.