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There seems to be some kind of unspoken agreement between fantasy owners to not mention Johnson's fantasy decline. Everyone acts like Johnson's 2,000-yard season is still the norm rather than a year in which everything went just right.
Because in reality, Johnson hasn't been nearly the same player since 2009. Just look at the points he's producing. In 2009, Johnson was far and away the best player in the league and racked up 342.9 points in a standard fantasy league (in this case, an nfl.com league).
But in 2010, Johnson dropped off to 228.9 total points, making him the fifth-highest-scoring running back in the league. That's good but not great from a first-round pick.
And then there's last year, where Johnson scored only 168.5 total points. That total was good for 16th among backs. Not players. Running backs.
Anyone who assumes that Johnson is still the same fantasy option he was in 2009 is just wrong. Last year, he wasn't even half of the player that he was in 2009. I don't know if this downward trend will continue, but Johnson owners have to be a bit wary of his fantasy decline.