2011-12: Sullivan did not play during the 2011-12 season.

High School: Sullivan graduated from Hannah Pamplico High School where he was a dual sport athlete playing both football and baseball.  From 2009-2011, Griffin was named to the SC High School Sports Report 1A All-State Team. He was also named to the SC High School Sports Report 1A All-State Defensive Team (Football) in 2011. He played AAU ball for BCBL.

Personal: Son of Donna and Robert Sullivan...he has two siblings Abby and Bert.