The ugliest moments in sports history

Myles Garrett of the Browns hit the Steelers Mason Rudolph in the head with a helmet in an awful scene Thursday.

Fan runs on track during race on Preakness day

A man jumped onto the racetrack at Pimlico during a race on the Preakness undercard in in 1999.  As Artax bore down on the intruder, the man planted his feet and threw an awkward overhand right at the horse. The man was pinned face-down on the dirt by security before being wrestled off the track in handcuffs.