Boston's regional Comcast/NBC network is hanging on by a thread. The only pro franchises it has are the Celtics and MLS Revolution; the Red Sox and Bruins are on NESN and Patriots preseason games are on WBZ-TV, a CBS affiliate. Boston may be America's worst college sports market, so pretty much every college football or basketball game the network picks up is "who cares" material, strictly for alumni. Thus, from the end of the NBA regular season to the beginning of the next, it shows endless hours of pure filler.