Leeds United's first pre-season friendly ended in defeat as MFK Ruzomberok claimed a 1-0 victory over Simon Grayson's side.
A first-half goal from Jan Chovanec was enough to separate the sides on a humid evening in northern Slovakia.
Leeds used no fewer than 23 players over the course of 90 minutes in Ruzomberok and the Elland Road club had their chances to earn a draw during a lively second half.
Grayson fielded two Slovakian trialists and included a number of new signings in his starting line-up, among them Kasper Schmeichel, Neill Collins and Lloyd Sam.
United fell behind in the 16th minute, however, when Michal Gallo's pass into the box was finished with a stylish strike from Chovanec.
Ruzomberok produced the better chances and were unlucky not to score again when Anton Sloboda pulled a shot inches wide of goal.
Leeds trialist Tomas Brusko failed to test Ruzomberok goalkeeper Libor Hrdlicka from outside the box and Mike Grella saw a low effort saved before half-time, at which point Grayson made 10 changes to his side.
Davide Somma almost produced an immediate equaliser but drove the ball at the legs of Hrdlicka and although Sloboda, Jan Maslo and Milomir Sivcevic went close to a second goal for Ruzomberok, Robert Snodgrass was denied by a post late on.