Marion was the head coach of Saint Patrick Saint Vincent in Vallejo, California in 2013. In his first year he led the Bruins to a first round home playoff loss, just one year after the team finished with a 1–9 record. Marion resigned and moved to Pennsylvania to take another head coaching position at
Waynesboro Area Senior High School in 2014. He led the Indians to their first winning season and divisional title in 22 years. His Indians also won 'Team of the Year' as selected by WHAG-TV.
During Marion's tenure at Waynesboro High School, he developed the GoGo offense, which incorporates principles of old-school triple-option offenses with modern spread concepts.
[1] In his first game as Howard's offensive coordinator, Marion's offense helped the FCS Bison defeat UNLV on September 13, 2017.
[2] The win by the 45-point underdog Bison was the largest point-spread upset in college football history.
[3]
Brennan was a quality control coach for Arizona State in 2015 & in 2016 was a running back coach at Oklahoma Baptist University, then served as
Howard University's offensive coordinator in 2017 and 2018. In 2019, he followed head coach
Mike London from Howard over to the
College of William and Mary where he began serving as offensive coordinator.
Marion resigned from his position at William & Mary to serve as the wide receivers coach on
Todd Graham's inaugural staff at
Hawaii for the 2020 season.
[4]
On February 15, 2021, Marion joined the staff at
Pittsburgh as the wide receivers coach.
On December 31, 2021, Marion was named passing game coordinator and wide receivers coach at the University of Texas.
I see some bad blood at Pitt between HC and Mation on the web.
Texas loved the guy.
We will see.