Hatters midfielder Elliot Thorpe was on the bench as Wales U21s suffered a heavy 5-1 defeat to Switzerland U21s in their Euro U21 qualifying campaign in Lausanne on Friday night.
The hosts were 3-0 up inside 20 minutes, Felix Mambimbi, Dan Ndoye and Zeki Amdouni all netting.
After the break, a goal-laden five minutes saw Joe Adams pull one back for Wales, but Ndoye and Amdouni scored again to make it 5-1 as the visitors were well beaten.
'Embarrassed' Hatter boss hits out at one of the 'worst' individual performances he has ever seen after Town's cup exit to Exiles
HATTERS RATED: Luton Town 2 Newport County 3
Jones warns 'naive' Town players they must be better if they want to feature for Luton following cup exit
Mendes Gomes left with a 'sour taste' after stunning Luton strike is spoiled by injury and cup defeat
Hatters humbled in the Carabao Cup as they let the lead slip twice against League Two Newport
They are next in action against Bulgaria at Rodney Parade, Newport on Tuesday.