Tang handed Garrycastle their fourth consecutive loss at the weekend.
Garrycastle are heading to the Westmeath Intermediate Football Championship after their loss to Tang at the weekend.
Tang's narrow victory on a scoreline of 2-10 to 1-12 on Sunday was just enough to give Garrycastle their fourth consecutive loss in Section B of the Senior Football Championship.
The Downs also saw their fourth game without a win, following their loss to Tyrrellpass - that game finished 1-12 to 0-14.
Athlone held off Mullingar Shamrocks to claim a crucial win on a final scoreline of 1-9 to 0-9.
Killucan went home with a two point victory over Coralstown/Kinnegad to round out the Westmeath Senior Football Championship action over the weekend.