Jordi Alba got hit by assistant referee

Strange situation in the Spanish Cup match: Jordi Alba got hit by assistant referee. Alba tried to get the ball and walked over the line. The assistant referee signalled for a throw-in for Atletico Madrid and the Barca player tried to walk back as soon as possible. He ran on right side of the AR, where he was pointing his flag. The AR did not notice him and lowered is flag … right on the head of Alba. The Barca player went down, but could continue the game.

Check out the game situation:

Have you ever injured a player as (assistant) referee?