Head injuries in football are not uncommon.
The game of football itself is a collision sport. And while the technology and studies in concussions and head injuries are still growing, injuries to the head remain inevitable.
On Sunday, the Seahawks placed defensive lineman Branden Jackson on the Injured Reserve list after a scary head injury at the team's first scrimmage last week, which left him temporarily unconscious.
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According to NBC Sports Northwest Seahawks Insider Joe Fann, Jackson was knocked unconscious after banging helmets with offensive tackle Cedric Ogbuehi in a scrimmage on August 22. The mock game ended after Jackson was transported to a local hospital by ambulance.
Carroll said Jackson’s situation is similar, if not quite the same, as former Seahawks safety Kam Chancellor and linebacker Cliff Avril’s injuries, Bob Condotta of the Seattle Times reports. Avril and Chancellor did not play again.
The 6-foot-4, 295-pound 27-year-old played 36 games with four starts for Seattle the past three seasons. He spent 2016 with the Raiders.
Seattle signed defensive end Pita Taumoepenu in a corresponding move.
Taumoepenu is a second-year defensive end out of the University of Utah. He was selected in the sixth round of the 2017 NFL Draft by the San Francisco 49ers. After just one season in San Francisco, Taumoepenu was waived and then claimed by the Arizona Cardinals where he played for 10 tens before being placed on the Injured Reserve list for a hamstring injury.