When running the Triple Option, the Playside Receiver has the Near Deep Defender and the Playside A-Back has #3.
When #3 is a rolled-up cornerback, this creates a highly-technical situation.
The below-listed diagram demonstrates how to block on the perimeter when running Triple Option versus Cover 2.
A common question is why the Playside Receiver outside releases versus a Cover 2 corner. This is so the safety is forced to run over the top to cover the Receiver versus the pass. If he doesn’t… come back the next play and throw Triple Pass to a wide open Receiver.