Bairstow provided 18 points and Kirk added 16 with 14 rebounds as the Lobos (4-1) claimed the third-place game of the South Carolina tournament.
Cullen Neal (15 points) and Kendall Williams (12) also reached double figures.
Davidson (1-5) was led by Brian Sullivan with 17 points.
Tyler Kalinoski netted 16 for the Wildcats.
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