Striker Radamel Falcao equalised Colombia's international goals record with a 74th-minute penalty in his country's 3-1 away win over Kuwait in a friendly on Monday.
The South Americans face Senegal in a decisive Group H clash in Samara on Thursday.
Boosted by 2014 Golden Boot winner James Rodriguez and top scorer Radamel Falcao, a confident Colombia will be looking to demolish low-ranked Japan on Tuesday before moving on to tougher Group H rivals Poland and Senegal.