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Dayton never trailed in the game, but UMass tied the game three times in the final six minutes.
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Cunningham scored 14 points and Davis added 11 as the Dayton Flyers built a 38-33 halftime lead.
Cunningham, held without a field goal Wednesday in a 72-66 victory at George Washington, scored Dayton’s first five points. He made 6 of 8 shots from the field.
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Davis, who scored a career-high 25 points at GW and made 7 of 11 3-pointers, made his first three 3-pointers in this game.
Dayton led 8-0 in the opening minutes and maintained the lead throughout the first half. Its biggest lead was 10 points.
Luwane Pipkins led UMass with 14 points on 5-of-14 shooting.
Dayton shot 50 percent from the field and made 5 of 9 3-pointers. UMass shot 41.2 percent and made 3 of 12 3-pointers.