The Jaguars need a mobile Mark Brunell. He relies a lot on his feet. In the red zone, the Jags will give him the option to run or pass.

"Speed flat" is a high-percentage play against man-to-man coverage, which the Dolphins will show in the red zone. The Jags will motion the "H" across the formation. If the strong safety runs with the H receiver, then Brunell knows it's man coverage. He will snap the ball when the H is behind the tackle so he gives him room to the flat.

The Z receiver will try to pick the strong safety on his release so the H can get separation. Then the Z will go to the corner of the end zone. The Y will run his delay route off the middle linebacker and show his numbers to the QB. The X will cross late in case Brunell has no one open. But by then Brunell should have run the ball. Brunell will come out fast and work through his progression -- H to Z to Y, trying to hit the H right as he goes to the flat.

The key to this is the pick by the Z. His "unintentional" pick will give Brunell space to get the ball to the H. It is critical that the running back cut the linebacker at the line of scrimmage so he is not in Brunells face at the point of attack. If this play is read right by the QB, it can't be stopped.