In association football, the term Hexagonal was often used to refer to the final round of FIFA World Cup qualification among the six remaining teams in CONCACAF. The six-team round robin format was used by CONCACAF since the 1998 FIFA World Cup qualification process, up until the 2018 tournament. For 2022, this round was expanded to eight teams or an octagonal. It was modeled after the CONCACAF Championship which used the format ever since its second edition in 1965, and served as the World Cup qualifying tournament from 1974 to 1990.