Concussion lawsuits filed by former St. Louis Cardinals receiver Roy Green, Kansas City Chiefs defensive lineman Neil Smith and their teammates could force team officials to testify about claims they hid the risk of repeated head injuries. A Missouri judge ruled the Cardinals case should be heard separately, and not decided on the federal level, where it could be combined with the recently settled federal class-action lawsuit that could cost the NFL $1 billion or more over the next several decades. Green, along with teammates J.T. Smith and Ed Scott, sued their old franchise - now in Arizona - in 2013, at about the same time nearly two dozen former Chiefs, including Neil Smith and Albert Lewis, filed a similar lawsuit against their former team. More...