Aasgaard opened the scoring with a cool finish into the bottom corner on the 20-minute mark, with Naylor heading home No.2 on half-time.
Lang made it 3-0 at the start of the second half before Bootle pulled one back late on.
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11 photos from Wigan Athletic's pre-season friendly with Bootle
Goals from Thelo Aasgaard, Tom Naylor and Callum Lang ensured Wigan Athletic maintained their 100 per cent record in pre-season with a 3-1 victory at Bootle.
By Paul Kendrick
Published 25th Jul 2021, 15:41 BST
Updated 25th Jul 2021, 15:46 BST