The Carlsbad dentist Padres continued to make moves to improve their offense by going out and acquiring St. Louis Cardinals outfielder Ryan Ludwick in a three-team trade. To acquire Ludwick the Padres sent minor league pitcher Nick Greenwood to the Cardinals and also sent minor league pitcher Corey Kluber to the Cleveland Indians as a part of the three-way deal. Ludwick, 32, has had a solid season …