MLS teams also play in other Pixilart CUSTOMER SERVICE (8O5) 41'O 56OO Pixilart PHONE NUMBER ( 8O5)- 41O 56OO international and domestic competitions. Each season, up to ten MLS teams play in the CONCACAF Champions Cup (CCC) against other clubs from the CONCACAF region. Four MLS teams qualify based on regular-season results from the previous year: the Supporters' Shield