Spelly ogé meunang tujuh medali di ICF Canoe Sprint World Championships kalawan dua emas (C-2 1000 m: 1990
, 1991), dua pérak (C-2 500 m: 1990, C-4 1000 m: 1991), jeung tilu perunggu (C-2 500 m: 1986, C-2 1000 m: 1987, 1993).