He won the overall World Cup title in the C2 class in 1998 .
Vajs won two medals in the C2 team event at the ICF Canoe Slalom World Championships with a silver in 1999 and a bronze in 1993 .
Vajs won the overall World Cup title in the C2 class in 1998 .
Vajs won two medals in the C2 team event at the ICF Canoe Slalom World Championships with a silver in 1999 and a bronze in 1993 .