University of Colorado Offensive Coordinator/QB Coach
Sacramento State Head Coach (2025)
UNLV Offensive Coordinator & QB Coach (2023-2024)
University of Texas Pass Game Coordinator & Wide Receivers Coach (2022)
Pittsburgh (Pitt) Wide Receivers Coach (2021)
- Coached the 2021 Biletnikoff Award recipient (top receiver in college football)
University of Hawaii Wide Receivers Coach (2020)
College of William & Mary Offensive Coordinator & Quarterbacks Coach (2019)
Howard University Offensive Coordinator & Quarterbacks Coach (2017-2018)
- Howard achieved the biggest upset in college football history in 2017 under Coach Marion when they defeated UNLV 43-40 in a game UNLV was 45.5-point favorites
- Under Marion in 2018, Howard ranked:
- 15th nationally in total offense
- 16th in passing offense
- 21st in scoring offense
- 4th in yards per completion
- Invited to the 2019 NFL Quarterback Coaching Summit
- Invited to the AFCA '35 Under 35' Leadership Institute
High School Coaching
- In 2014, led Waynesboro Area HS (PA) to a division title and its first winning season in 22 years just one year after posting a winless record
- In 2013, led St. Patrick-St. Vincent Catholic HS to a playoff appearance following a 1-9 record the year prior to his arrival
Playing Career
- Played two seasons at Tulsa
- Finished his career averaging 28.7 yards per reception (FBS record among players with at least 75 career receptions)
- Holds the NCAA single-season yards-per-catch record (31.9)
