Comcast's (Nasdaq: CMCSA) Xfinity service is ramping up its efforts to draw sports lovers with "Sportstacular!," a week-long promotion that offers Xfinity customers access to live sports programming for no additional cost. From Nov. 11-17, customers will be able to watch content from networks such as NFL Network, Big Ten Network, Pac-12 Networks, ESPN Goal Line, FOX Sports 1, NBA TV, NHL Network and NBC Sports Network. The content will be available for customers on their TV, online and on mobile devices using the Xfinity TV Go app. Release