This is crazy, but a player dies after a studs up challenge. While it's a horrible tackle it doesn't look as bad as others I've seen, but it's where the boot hit that caused the death. Video in link is safe for work.
http://www.couriermail.com.au/sport/football/indonesian-footballer-akli-fairuz-dies-after-horror-tackle-from-goalkeeper/story-fnii0fc3-1226923696466