First regional champion for last tournament

United Arab Emirates will welcome all 6 regional champions for the last official competition in 2018: the fifteenth edition of FIFA Club World Cup. This tournament is going to start in December, and as months goes by, the first continental champion is already known.
After Al-Ain which is actually the winner of the Arabian Gulf league and host at the same time, this next club is basically the first who is a champion of a confederation. Chivas Guadalajara is going to represent the CONCACAF region after the Mexican club lost at home the second leg with the same result 1:2 in regular time, but won 4:2 on penalty shootouts.
Most interesting part is that these two teams will be for the first time in this event.