Buuxi weedha soo socota: Ciyaaraha Olombikada Xagaaga ee 2004 ee Athens, Lagoun wuxuu u qalmay inuu noqdo dabaasha shaqsiyeed ee ragga 100 m balastar. Wuxuu ka saaray FINA B-ta caadiga ah ee 53.66 laga bilaabo
Horyaalka Yurub ee Madrid, Spain. Wuxuu caqabad ku noqday toddobo dabaalyahan oo kale oo ku jiray heerka shanaad, oo ay ku jiraan Milorad Čavić oo ka tirsan Serbia iyo Montenegro. Wuxuu tartan ku galay kaalinta shanaad 0.24 ilbiriqsi oo ka dambeeya Frédérick Bousquet oo reer France ah 53.87. Lagoun wuxuu ku guuldareystay inuu u gudbo semi-finalka, maadaama uu galay kaalinta lix iyo labaatanaad ee guud ahaan horudhaca.