Casually playing FIFA when this question was asked

Casually playing FIFA with a friend, the teams are Real Sociedad v Granada (we tend to play real life fixtures), Xabi Prieto is on the ball and then a statement, "he scored a hat-trick at Real Madrid and still lost".
This leads on to the question "who has scored a hat-trick against Real Madrid". I gave it a bit of a thought and said Lionel Messi last season which was true but before Prieto's hat-trick had me at a blank. I decided to go back as far as the 1990-91 season and this is what I found.

Hat-tricks against Real Madrid at Santiago Bernabeu
Lionel Messi (Barcelona)           23-03-14

Xabi Prieto (Real Sociedad)     06-01-13

Walter Pandiani (Espanyol)     12-05-07

Jan Urban (Osasuna)             30-12-90

Amazingly for both Xabi Prieto and Walter Pandiani they scored hat-tricks but still ended up losing the game, both 4-3. Lionel Messi was on the right side of a 4-3 scoreline. However Jan Urban's hat-trick helped Osasuna to an amazing 4-0 win!