I would treat it as one word to market it. Sportscasts.tv rather than two words. Makes it more generic and a single word is more valuable that a two worder.
Development and content is key here. Geo's are the hot .tv category now so don't think you will get top dollar as a name alone to the domaining community. That being said, this would have some real value to end users and will require some heavy lifting in terms of finding the right buyer but potential 5 figure name to the right buyer. Got to dig them up though, they will not be looking for you!