With the win, Marshall secured its first ever victory over Manvel, and remains undefeated for the season.
It was a bit of a slow start for both teams, but Manvel's high octane offense struck first after quarterback Josh Coltrin hit Jude Mayon for a 17-yard touchdown.
HIGHLIGHTS: Devon Achane's big day versus Manvel
Marshall responded immediately with an 88-yard kickoff return by Devon Achane, tying the game at seven. Achane's kickoff return was the first of seven total touchdowns on the night for the 3-star running back.
A couple of early miscues hampered Manvel from blowing the game open. Marshall's defense managed to force a turnover on downs in the red zone, then a missed 30-yard field goal kept the game tied to end the first.
A costly fumble by Manvel on a trick play led to a Marshall recovery, which led to Achane's second touchdown of the game.
Coach Williams discusses incredible overtime win versus Manvel
Both teams exchanged touchdowns for the remainder of the game before heading into overtime tied at 44.
In the extra period, Manvel got off to the strong start by feeding Garrison Johnson, picking up his fourth touchdown of the game on a 5-yard run.
But with the disparity in school sizes causing Marshall to tire quicker, Coach Williams had his team go for the win.
Achane picked up his fifth rushing touchdown of the game on a 1-yard run to bring Marshall within a point.
Marshall then decided to go for the win on a 2-point conversion, which, of course, came on the back of Achane, keeping Marshall unscathed in the loss column this season.