The pre-order period of Matt Waldman’s 2021 Rookie Scouting Portfolio — available for download April 1 — is now underway.  “@MattWaldman’s Rookie Scouting Portfolio is unique and important. A must-read every year.” – Doug Farrar, USA Today and Author of The Genius of Desperation: The Schematic Innovations that Made the Modern NFL You’ve Been Waiting For…