Bulgaria 0 Wales 1: A debut goal from Freddy Eastwood's secured victory for John Toshack's youngsters against Bulgaria in Bourgas.
The Wales boss sent out teenagers against one of Europe's more experienced sides - but his team defended magnificently to achieve a win few expected.
The Wolves striker's goal came a minute from the break when he cut in from the left to drill home a 20-yard effort.
Wales goalkeeper Wayne Hennessey needed to make a great save when Velizar Dimitrov was clean through, as the hosts came under pressure in the second half.
Skipper Danny Gabbidon was immense at the back, with Lewin Nyatanga not far behind, but the captain frightened his own side by slicing a clearance against a post as the pressure mounted.
Martin Petrov blasted another free-kick into the wall before Hennessey saved again from Dimitrov as the shots rained in, but Wales held on for an impressive win against a side who have yet to be beaten in seven Euro 2008 qualifers.