Chisholm carried it 18 times for 103 yards and two touchdowns for Dayton (5-2, 4-1 Pioneer League). Hamm was 12 of 19 for 137 yards with a touchdown, and he added 25 carries for 129 yards.
Chisholm had an 11-yard touchdown on Dayton's first possession and the Flyers led 14-0 after Cole Hildebrand's 30-yard pick-6.
Michael Appel Jr. threw for 323 yards with two touchdowns and an interception for Valparaiso (4-4, 3-2). Braden Contreras and Solomon Davis each had 100-plus yards receiving and a touchdown.
Brian Bartholomew tied it at 24 with 14:50 left in the fourth quarter on a 35-yard field goal.
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