Meath beat Dublin in the other game in group one.
Westmeath have made a winning start to their Under 20 Leinster Football Championship campaign.
They came out on top of their midlands derby with Offaly 1-17 to 0-14.
The Lake County were the better side throughout the contest in Kilcormac.
Their manager Kenny McKinley says he's very happy to get the victory regardless of the scoreline:
Elsewhere Laois endured a difficult evening at home to Kildare.
After scoring just one point in the first half, the O'Moore County lost on a final scoreline of 3-18 to 0-6.
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