The winners will go on to face Meath in the quarter finals.
Westmeath get their Leinster Football Championship campaign underway this weekend.
Mark McHugh's side travel to Pearse Park to take on Longford, with a spot in the quarter finals and a meeting with Division Two champions Meath up for grabs.
The Lake County will be hoping to go further in this year's provincial championship, following their quarter final exit away to Kildare in 2025.
It'll be the county's first game since their late defeat to Wexford which denied them promotion to Division Two.
Westmeath captain Ronan Wallace says they are now focused on Sunday's game:
Throw in is at 3:00pm from Pearse Park this Sunday.
Wallace spoke to Kevin Egan about the upcoming season:
Our coverage of Westmeath against Longford in the Leinster Senior Football Championship is with thanks to Keenan Bauer Motors Mullingar. Your home for Citroen and Honda in the Midlands. Keenanbauer.com
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