Hope fell to 7-5 overall.
Junior center Brock Benson of Willowbrook, Illinois (Hinsdale South HS), chipped in 18 points and a game-high seven rebounds for the Flying Dutchmen.
The game featured 13 lead changes and 11 ties.
Blackledge, a sophomore from Canton, Ohio (Hoover HS), gave Hope its last lead at 54-53 with two free throws with 4 minutes, 33 seconds remaining.
Both Blackledge and Benson scored 14 points during the second half.
The Flying Dutchmen return to action on Saturday, Jan. 10, when they host Calvin in the 189th edition of The Rivalry. Tipoff is 3 p.m.