Fladberg wonmemenangkan themedali goldemas medal at thedi [[1983Kejuaraan Dunia IBF World Championships1983]] indi men'sganda doublesputra withbersama [[Jesper Helledie]], defeatingmengalahkan [[Mike Tredgett]] anddan [[Martin Dew]] 15–10, 15–10 in thedi final. HeIa merupakan wasperaih amedali silverperak medalistdi atturnamen theyang samesama tournamentdi innomor mixedganda doublescampuran withbersama [[Pia Nielsen]].<ref>Pat Davis, The ''Guinness Book of Badminton'' (Enfield, Middlesex, England: Guinness Superlatives Ltd., 1983) 110.</ref>
HeIa alsojuga wonmenang at thedi [[1986Kejuaraan EuropeanBulu BadmintonTangkis ChampionshipsEropa 1986]] indi men'sganda doublesputra withbersama Helledie, and thedan [[1988Kejuaraan EuropeanBulu BadmintonTangkis ChampionshipsEropa 1988]] indi mixedganda doublescampuran with England'sbersama [[Gillian Clark (badmintonbulutangkis)|Gillian Clark]]. dari Inggris . Fladberg anddan Clark aresaat ini menjadi currentlytim akomentator commentaryuntuk teambulutangkis foryang televiseddisiarkan badmintontelevisi.
