Approximately 800 hours of college football and basketball, professional bull riding, WWE fights, NASCAR races, PBA bowling and professional volleyball that air each year on Nexstar’s CW broadcast network will steam from a venue that might be considered surprising: ESPN . Under a deal announced Wednesday, ESPN will reap the extra hours of activity and the audience that comes to its direct-to-consumer subscription service with the new sports inventory, while the CW will oversee sales of ad