Association Sportive la Jeunesse d'Esch/Alzette , usually abbreviated to Jeunesse Esch , is a professional football club based in Esch-sur-Alzette , in south-western Luxembourg . The side play in the National Division , the highest league in the country, and have won the league title on 28 occasions between 1921 and 2010, the most of any team in Luxembourg. [ 3 ]