except around hot, bright stadium lights......
Which are about 20 metres up from the camera position..so that insect would have to be rather large...I just find it a strange coincidence that from all the available space on the screen image, a bug appears to fly out from where the TR is located.
watch carefully in the top left corner of the picture.
It does indeed appear to be from the same trajectory as the first quick movement across the screen.
However as has been pointed out, one would have thought that by now, there would have been reports of debris landing in the stadium.