Chargers safety Jahleel Addae didn't show symptoms of a concussion until Friday afternoon, a day after having two scary reactions following hits in a loss at Denver, a person with knowledge of the situation said. Addae's injury gained significant attention after he convulsed while remaining on his feet after a helmet-to-helmet hit late in the third quarter Thursday night. On the game's first play from scrimmage, Addae made a hit and immediately went limp on the ground. Addae's reaction to the second hit caused a stir on Twitter. More...