Minnesota Vikings quarterback Teddy Bridgewater lies unconscious after sustaining a particularly nasty hit to the head during a game against the St. Louis Rams in 2015. The NFL reports there were 271 diagnosed concussions last year.
New England Patriots' defensive end Chandler Jones holds a Microsoft Surface tablet on the sideline in the third quarter of the AFC Championship game against the Denver Broncos. In the second quarter, the Patriots' tablets briefly stopped working.
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Green Bay Packers' Elijah Pitts runs with the ball during Super Bowl I against the Kansas City Chiefs at Memorial Coliseum on Jan. 15, 1967, in Los Angeles.
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St. Louis Rams owner Stan Kroenke, seen here speaking to the media after NFL owners approved the Rams' move to a new stadium just outside Los Angeles, is the target of anger for many NFL fans in St. Louis today.
The St. Louis Rams will be moving to Los Angeles. It will be the first NFL franchise in the city since the Rams and Raiders left the city two decades ago.
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