Devezin broke loose on a 56-yard touchdown run that pushed the Bears' lead to 34-20 with 3:01 left. Alex Ramsey scored on a 1-yard touchdown run with about a minute left to cap an 11-play, 69-yard drive for VMI. Mercer recovered the ensuing onside kick.
Mercer (3-4, 2-2 Southern) scored a pair of third-quarter touchdowns to stretch its lead to 27-6. Harrison Frost tossed a 9-yard score to Chris Ellington off a fake field-goal attempt, and Kaelean Riley added a 12-yard TD pass to Yahsyn McKee.
VMI (4-4, 3-2) answered early in the fourth on a 1-yard touchdown run from Ramsey, and a Reece Udinski 2-yard TD toss to Colby Rider.
Udinski was 26-of-46 passing for 263 yards. Ramsey ran for 125 yards on 27 carries.
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