Man Utd's Champions League opponents Olympiacos were beaten 3-0 at home to rivals Panathinaikos at the weekend. During the game Panathinaikos manager Yiannis Anastasiou got hit by an object from the crowd and went down in a heap.
According to the Daily Mail, Anastasiou was hit by a plastic cup. Maybe plastic cups are made of some sort of reinforced material in Greece but I'm pretty sure you shouldn't go down like that after being hit by your average open top plastic liquid container. Worst case scenario as I see, maybe there's some ice in the cup and maybe it stings a little bit.
Here's the video.
http://www.youtube.com/watch?v=fnrvbbp6lFc