Question: What Canadian Championship had CONCACAF Champions League of Semifinals?
SQL: SELECT "Canadian Championship" FROM "2-15559013-1" WHERE "CONCACAF Champions League" = 'Semifinals';

Question: Which regular season had the playoffs of 0 MLS Cups?
SQL: SELECT "Regular Season" FROM "2-15559013-1" WHERE "Playoffs" = '0 MLS Cups';