The WR Screen and Up play is a great trick play that takes some time to set up. You have to run the WR Screen play beforehand, and run it successfully. If you begin to hurt them with the Screen, then the defense will start to sneak up forward, and that is when you hit them with the Screen and Up.
The most important aspect of performing this play is the way in which the Wide Receiver fakes his block. He has to run out to the Cornerback as if he is going to block him, and as soon as the Cornerback makes a move to avoid the block, the Receiver then turns on the jets and runs up the sideline. The defense won’t even know what hit them until the ball is flying over all their heads.