Swanson's epic doubleheader gives him best 4-game series in Cubs history -- with game left

A notable achievement has been made by a player in a recent series of games. Details about this feat are available from ValleyCentral. The performance in question occurred during a doubleheader and has resulted in a record for the Chicago Cubs.

This record is for the best series of four games, and it was achieved with one game still to be played. Further information about this accomplishment can be found through ValleyCentral, including specifics about the games and the player involved.