This is awful to watch:
[Warning: Disturbing]

Dude fell 20 feet from the right field wall and landed on the warning track.
The stadium fell into complete silence as Pittsburgh EMS, along with both the Cubs' and Pirates' athletic training squads treated the man before loading him on a stretcher. He was then transported to Allegheny General Hospital in critical condition.
From the Pirates:
Such a sad story here, and we'll be praying for the man's health.
Detectives from the Pittsburgh Police Violent Crime are investigating the incident, though the video doesn't seem to suggest foul play.
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