Last year's beaten finalists have shipped a surprising loss in the championship's first round.
Tang grabbed the headline result on the opening weekend of the Westmeath Senior Football Championship.
They beat last year's beaten finalists Coralstown-Kinnegad on a final score line of 1-5 to 0-6.
Elsewhere in the championship, St Loman's began the defence of their title with a 1-15 to 2-8 win over Athlone, Killucan beat St Malachy's by 0-9 to 0-5.
The Downs began their campaign with a convincing nine point victory over Moate All Whites, Tyrrellspass beat Caulry 2-12 to 1-10, and Mullingar Shamrocks were five point winners over Shandonagh on a final scoreline of 1-13 to 1-7.
The championship continues this weekend with Coralstown-Kinnegad meeting Tyrrellspass in Cusack Park on Friday.
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