Eden Thistle edged an absolute classic, 4-3, away to Ullswater United in the James Cropper Westmorland League, scoring their winning goal with a quarter of an hour remaining.
Both teams went into the Division III boasting 100 per cent league records.
But it was the Carlisle-based side who emerged the victors with goals from Gary Richardson (2), Phil Wynne and Nicky Routledge.
Luke Savage (2) and Dan Owen replied for Ullswater.
Other Westmorland League results
Division II
Ambleside Utd 9, Kendal County Res 1. Cartmel & District Res 2, Ibis Res 1.
Division III
Brough FC 0, Endmoor KGR Res 16; Burneside Res 2, Penrith Royal 4; Kirkoswald Res 10, Eden Utd 2.
Westmorland FA Senior Cup, first round
Milnthorpe Corinthians 1, Kendal Town 2; Kendal County 5, Windermere SC 2; Ibis 4, Kirkoswald 3; Endmoor KGR 12, Arnside 0; Alston Moor FC 1, Kirkby Lonsdale 5; Braithwaite 1, Keswick 11; Greystoke 2, Penrith AFC Res 1; AFC Carlisle 0, Appleby 3. Milnthorpe Town 3, Burneside 7. Away walkovers for Staveley Utd and Lunesdale Utd, over Kirkby Stephen and Carleton Banks, respectively.