EXCLUSIVE CONTENT Get ESPN+ Trade grades: Can Jarell Martin help the Magic?Jarell Martin is headed to the Magic. AP Photo/Matt SlocumKevin Pelton, ESPN Senior WriterJul 23, 2018, 05:17 PM ETClose Co-author, Pro Basketball Prospectus series Formerly a consultant with the Indiana Pacers Developed WARP rating and SCHOENE systemFollow on XEmailThe dealMagic get: Forward Jarell Martin, cashGrizzlies get: Center Dakari Johnson and the draft rights to Tyler Harvey