The CONCACAF Council, at its meeting on 25 July 2017 in San Francisco, California approved the implementation of the following two-tier competitions for affiliated clubs of Caribbean Member Associations starting in 2018:
The Tier 1 competition, known as the CONCACAF Caribbean Club Championship, is contested by the champions and runners-up of the top professional and semi-professional leagues in year 1 (2018), and open to only fully professional leagues in year 2 (2019) and onwards.
The Tier 2 competition, known as the CONCACAF Caribbean Club Shield, is contested by the champions of the top leagues in Member Associations that have no professional or semi-professional leagues in year 1 (2018), and open to amateur and semi-professional leagues in year 2 (2019) and onwards.
Location of teams of the 2018 CONCACAF Caribbean Club Championship
The new two-tier format of the CONCACAF Caribbean Club Championship and CONCACAF Caribbean Club Shield, as well as the teams participating in each tournament, were announced by CONCACAF on 15 December 2017. Among the 31 CFU member associations, four of them were classified as professional leagues and may enter the CONCACAF Caribbean Club Championship.
A total of eight teams from four associations entered the 2018 CONCACAF Caribbean Club Championship (officially the 2018 Flow CONCACAF Caribbean Club Championship for sponsorship reasons).
The draw for the group stage was held on 21 December 2017, 11:00 EST (UTC−5), at the CONCACAF Headquarters in Miami, United States, and was streamed on YouTube. The eight teams were drawn into two groups of four. The two group stage hosts were placed in Pot 1, while the remaining six teams were placed in Pot 2. Teams from the same association could not be drawn into the same group.