which are the major sports there?
Soccer and basketball.
Delaware County, Pennsylvania
The city of Chester is home to the Philadelphia Union of Major League Soccer. The team plays at Talen Energy Stadium, a venue located at the base of the Commodore Barry Bridge.

Delaware County is the traditional home of women's professional soccer in the Philadelphia area. The former Philadelphia Charge of the defunct Women's United Soccer Association played at Villanova Stadium, which is located on the campus of Villanova University. The Philadelphia Independence of Women's Professional Soccer succeeded the Charge and played at Widener University's Leslie Quick Stadium in 2011.

Delaware County is the home of one of oldest baseball league
where was the three-cent nickel minted? United States Bureau of the Mint. who designed it? James B Longacre. where was he born? Delaware County , Pennsylvania.
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Delaware County, Pennsylvania [SEP] Sports
The city of Chester is home to the Philadelphia Union of Major League Soccer. The team plays at Talen Energy Stadium, a venue located at the base of the Commodore Barry Bridge. Delaware County is the traditional home of women's professional soccer in the Philadelphia area. The former Philadelphia Charge of the defunct Women's United Soccer Association played at Villanova Stadium, which is located on the campus of Villanova University. The Philadelphia Independence of Women's Professional Soccer succeeded the Charge and played at Widener University's Leslie Quick Stadium in 2011. Delaware County is the home of one of oldest baseball leagues in the country, the Delco League, which at one time was known for featuring future, former, and even current major league players who were offered more money than their current teams would pay them.