The Cubs earned about $60 million splitting their schedule between CSN Chicago and WGN-TV. The team received about $500,000 per game from CSN and about $250,000 per game from WGN, according to sources. But years of dismal play resulted in low ratings and poor ad sales for WGN-TV, which sources say lost about $200,000 per game last season. In recent negotiations this fall, Tribune Media balked at paying its previous rate, much less an increase sought by the Cubs, according to sources.