CREATE TABLE table_13335 ("Season" TEXT, "Rounds" FLOAT, "Champion" TEXT, "Most tries" TEXT, "Player of the Year" TEXT)

For which season is Tim Mikkelson player of the year?
SELECT "Season" FROM table_13335 WHERE "Player of the Year" = 'tim mikkelson'
SELECT "Season" FROM "table_13335" WHERE "Player of the Year" = 'tim mikkelson'