Nowadays, there is an Internet stream for most every game, and I expect the NCAA would have even more options. This how I got to watch the KU games that were blacked out early in the season. You just have to be careful as many of the sites are nothing more than virus factories. As @JRyman mentioned, I believe that CBS streams all the games, you just have to sign in to their site but it not a big deal. I am not sure what is the protocol for early round games that other networks broadcast.