The Sioux City Explorers of the Northern League have a new manager. Benny Castillo will take over for Ed Nottle who resigned in November. Castillo led Duluth to the Northern League Central title last year. He promises a style that fans will like. Castillo is only the second manager in the Explorers history. He knows he’s replacing someone who’s well respected. Nottle resigned after eight years as president and manager of the club, saying he did not want to do it full-time.