The pre-order period of Matt Waldman’s 2019 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 od Desperation: The schematic Innovations that Made the Modern NFL You’ve Been Waiting For This Day?…