Linesman confuses Mike Shanahan about what down it is, costs Redskins a chance at comeback

What down is it? Jeff Triplette still doesn't know. Robert Griffin threw the ball downfield on first down. The pass was incomplete, and it brought up fourth down. Wait. What? Well, hold on a second. A play before Griffin threw down field, he completed a pass which appeared to go for a first down. That's what the linesman told Shanahan when he asked for a measurement. Head official Jeff Triplette was trying to communicate the fact that it was third down, however. It was too late. Redskins coach M...