WORCESTER—The City Council Tuesday approved the creation of a Ballpark Commission to oversee the general operation of Polar Park. As with previous council discussions about creation of the commission, it wasn't without debate, and it wasn't without another attempt to send it back to City Manager Edward M. Augustus Jr. for further revisions. The city manager had intended to have the commission in place ahead of the scheduled May 11 opening day at the city-owned minor league baseball stadium in the Canal District that will serve as the home of the top minor league affiliate of the Boston Red Sox.