Complex sentence: No professional team has ever called the stadium home, although in 1996 the Northeast League considered placing a franchise in Cooperstown; this idea was rejected because Doubleday Field has no lights, a necessity for a team in a pro league.
Split into simpler sentences: No professional team has ever called the stadium home, although in 1996 the Northeast League considered placing a franchise in Cooperstown. This idea was rejected because Doubleday Field has no lights, a necessity for a team in a pro league.