Match ends, Luxembourg U21 0, Wales U21 0.
Wales Under-21 kept up their 100% record in their 2017 European Championship qualifying campaign with a 3-1 victory in Luxembourg.
Bristol City's Wes Burns led the way with a brace of goals scoring either side of half-time, with Harry Wilson claiming Wales' other score.
Dejvid Sinani claimed a consolation for the hosts deep in time added on, but the goal came too late.
Wales beat Bulgaria 3-1 in their opening game of Group 5 in March.
Manager Geraint Williams' side will also face Romania, Denmark and Armenia with the nine group winners qualifying for the finals in Poland and the four best runners-up advancing to the play-offs.