CREATE TABLE table_23375 ("Year" TEXT, "Division" TEXT, "League" TEXT, "Regular Season" TEXT, "Playoffs" TEXT, "Open Cup" TEXT)

When divisional finals are the playoffs what is the regular season?
SELECT "Regular Season" FROM table_23375 WHERE "Playoffs" = 'Divisional Finals'
SELECT "Regular Season" FROM "table_23375" WHERE "Playoffs" = 'Divisional Finals'