Jaguars defensive end Jason Babin had grabbed hold of Andre Ellington's hair and emerged from the pile with his arm outstretched and black strands dangling from his fist. He raised the hair like a trophy, then flung it to the turf. Hair is considered part of the NFL uniform, so Babin was not penalized.
— Eric Adelson
This isn't an isolated incident, hair pulling is something that happens more often than you think in sports.