It had been known Berry was attempting to recover from some sort of leg injury, but it was believed at first to only be a case of cramps, with some speculating he could miss a couple weeks. However, reports out of Kansas City got worse as Monday went along, until NFL.com's Jason La Canfora broke the news:
Another big blow for the Chiefs: S Eric Berry out for the season with a torn ACL suffered at start of Week 1 loss to Bills.
This is pretty devastating news for a young defense that looked to Berry as its best player. The Chiefs already had to find a way to bounce back from a big loss at home, and now they'll have to do so without one of their primary weapons.