In 1998 the Dual Slalom was born in the world cup: head to head between 2 athletes with qualifying heats. In 2000 and 2001 he was also awarded the world champion jersey. From 2002 takes over four-cross (4x) which replaces dual slalom. The only difference between dual slalom at 4x is that the heats change from 2 to 4 riders.
Roll of Honor World Championships 4x / Dual Slalom

Worlds 2021 4x four cross val di sole