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Texas A&M quarterback Johnny Manziel poses for photos after being selected by the Cleveland Browns as the 22nd pick in the first round of the 2014 NFL Draft, Thursday. Craig Ruttle/AP hide caption

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Craig Ruttle/AP

A 49ers fan displays her hopes for next season at a Seahawks game. If a San Francisco fan has his way, the sign could also refer to playoff tickets, which were limited to markets with strong Seattle support this year. Kevin C. Cox/Getty Images hide caption

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Kevin C. Cox/Getty Images

The current record holder for loudest crowd in history are the fans of the Seattle Seahawks, who cheered so loud that they induced a mini-earthquake. But that level of noise can permanently damage fans' hearing. Scott Eklund/AP hide caption

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Scott Eklund/AP

Tickets? Tickets? Anybody need tickets? Some are available to Sunday's Super Bowl in New Jersey at "bargain" prices. Charlie Riedel/AP hide caption

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Charlie Riedel/AP

Former Dallas Cowboy Josh Brent earlier this month. Tony Gutierrez/AP hide caption

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Tony Gutierrez/AP

Junior Seau sustained many concussions during his career and was suffering from a degenerative brain disease when he killed himself in May 2012. Otto Greule Jr./Getty Images hide caption

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Otto Greule Jr./Getty Images