It was Eaves' third game this season with 30 points or more. And like last year, the Mountaineers (4-13, 2-5 Sun Belt Conference) handed Arkansas State (8-8, 4-1) its first conference loss of the season.
Eaves shot 9 for 17 from the field, including seven 3-pointers, and had seven rebounds.
Anthony Livingston scored 29 points with 15 rebounds, three blocks and two steals to lead Arkansas State.
Appalachian State led 13-0 before the Red Wolves scored with 14:17 remaining in the first half. Jacob Lawson hit back-to-back jumpers to stretch the Mountaineers' lead to 20-3. Appalachian State built a 47-30 halftime lead and led by double digits the rest of the way.