Image Credit: SMMSport, Poskod, BongDa+
5. Vietnam (Ranked 84th – September 1998)
Vietnam recorded a historic 3-0 victory against Thailand in the 1998 Tiger Cup semi-final, resulting in a 14-rank leap in the FIFA Ranking. The team was ranked 84th in August 1998. Vietnam achieved this feat by winning 3 and drawing 3 out of their 8 matches played that year.