Robert Griffin III will ride the pine to start the NFL season, but it has nothing to do with a head injury.

Amid rumors that the quarterback lost his starting job to Kirk Cousins over potential health risks after a mysterious head injury, the issues that led to his demotion have nothing to do with him physically, according to the Washington Post.

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Per the report, general manager Scot McCloughan, owner Daniel Snyder, President Bruce Allen and head coach Jay Gruden each came to an agreement on the decision due to two reasons, neither of them having to do with a physical ailment. The first reason is that Griffin was lost in Gruden's time-based offense, which Cousins grasped more efficiently than the incumbent.

The second reason is that due to Griffin failing to grasp the offense, Gruden ran the risk of losing credibility with his team by rewarding winners of competitions with starting jobs at every position except for under center, which is the most important spot on the gridiron.

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If Gruden had simply handed the 2012 first-round pick the reins to the offense despite Cousins outperforming him, he may have risked losing the locker room.

The last few years have been quite the fall from grace for the signal caller. Griffin burst on the scene in 2012 after Washington selected him with the No. 2 overall draft pick and he eventually rose to great heights, winning Offensive Rookie of the Year. After that, injuries and mediocrity caught up with the signal caller.

Following an up-and-down 2013, Griffin played in just nine games last season, throwing more interceptions (six) than touchdowns (four) and being less efficient in his running game than he was when he first made it to the NFL.

After a 4-12 finish last year and some rumors of angst behind the scenes for the Redskins, it was announced last month that Cousins earned the starting job for Week 1 against the Dolphins. Cousins, 27, has played 14 games in his NFL career and is 240-for-407 (59 percent) for 3,030 yards with 18 touchdowns and 19 interceptions.

The Cousins Era begins Sunday at FedEx Field.

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