The Bobcats joined the rest of the Mid-American Conference at the House of Blues in Cleveland on Tuesday.
Roark spent four years at the helm for the Bobcats.
Ohio had numerous chances to score late in the game, but ultimately fell to Bowling Green in extras.
The Bobcats managed just one run on four hits and will now face elimination Friday.
Ohio all but secured a spot in the MAC Tournament with Wednesday’s double header sweep.
Ohio did not repeat Saturday’s issues and avoided a series sweep.
Ohio committed ten errors across the two games and lost both despite leading after five innings.
The Bobcats dropped the first game but took the second on a walk-off home run.
Ohio showcased its potent offense in the sixth inning Friday.
The Bobcats swept Sunday’s doubleheader, but dropped the series finale on Monday.