Match plays a minimum of four maps. A fifth map is played if the match is tied at the end of the forth map.
The initial Control Map is predetemined in advance by the tournament. Second Map is Hybrid. Third Map is Assault. Fourth Map is Escort. Fifth (tiebreaker) Map is Control.
In succeeding maps, the losing team of the previous map selects the map. Winning team selects the side.
All maps currently available in Overwatch is eligible to select from.
Unlike last year this year all players were selected by the coaches who are chosen for each World Cup team. For the USA team, there was an extensive trial for various OverWatch league in OverWatch Contender members competed for the eight coveted slots.