The Raiders (19-10, 12-5 Horizon League), who trailed by 12 in the first half, shot 66.7 percent in the second half (14 of 21) to prevent the Penguins from snapping a seven-game losing streak.
Youngstown State (8-20, 2-15) took a 35-23 lead on Ashen Ward's 3 with 2:13 left in the first half.
Todd Brown's jumper pulled Wright State within 35-34, 10 seconds into the second half, but it wouldn't take reclaim the lead until Tabler's 3 for a 58-57 advantage with 8:33 left.
The Raiders led by four, three different times before Vytas Sulskis' two free throws tied it at 70 with 28 seconds left.
Todd Brown scored 16 for Wright State and Vaughn Duggins added 15.
Sulskis led the Penguins with 15 points and 10 rebounds and Sirlester Martin added 16 points.