CREATE TABLE table_31920 ("Outcome" TEXT, "Year" FLOAT, "Championship" TEXT, "Opponent in the final" TEXT, "Score  ( l )  = score in legs ,   ( s )  = score in sets." TEXT)

Tell me the outcome for premier league darts
SELECT "Outcome" FROM table_31920 WHERE "Championship" = 'premier league darts'
SELECT "Outcome" FROM "table_31920" WHERE "Championship" = 'premier league darts'