The Isle of Man lost 1-0 to the Republic of Ireland Amateur FA in their opening game of the Quadrangular Tournament in County Down on Wednesday.
Kevin Manning's team matched the Irish for 84 minutes, but a lapse in concentration led to a late winner and Manx disappointment.
"I'm delighted with the application of the lads but obviously we are annoyed to lose by a late goal," said Manning.
The Island faces Scotland on Thursday before playing the hosts on Saturday.
Manning continued: "We have to pick ourselves up and try even harder against the Scots.
"They are a very tall side so we will make a few changes and hopefully give them a good match."
The biennial tournament is a round robin with the Isle of Man taking on the amateur FA sides of Northern Ireland, Scotland and the Republic of Ireland.
Isle of Man Squad:
Goalkeepers - Mark Blair (Laxey), Max Thomas (St Mary's)
Defenders - Julian Ringham (St George's), Alex Harrison (St Mary's), Daniel Lace (Peel), Sean Quaye (St George's), Michael Baker (Rushen), Adam Cregeen (Rushen)
Midfielders - Steven Riding (Rushen), Johnny Myers (Peel), Marc Kelly (Peel), Frank Jones (St Mary's), Daniel Bell (Peel), Nick Hurt (Michael), Chris Bass Jr (St George's), Lee Gale (Peel), James McStay (St George's)
Forwards - Ciaran McNulty (Gymns) Josh Kelly (Rushen)
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