On the first day of the Games, Stacchiotti placed eighteenth in the 400 m individual medley. Swimming in heat two, he blasted a new Luxembourgian record of 4:17.20, but came up short in second place by nearly half a second (0.50) behind Belgium's Ward Bauwens. Four days later, in the 200 m individual medley, Stacchiotti registered a time of 2:00.38, just a small fraction outside his own record, but missed the semifinals by a tenth of a second (0.10) behind Canada's Andrew Ford. Ending up with frustration and disbelief, Stacchiotti failed in what was to be his most surprising moment of all time: "It's my fault. I completely lost my rhythm during the breaststroke”.