If you are using an ISP that has signed an agreement with ESPN (i.e. Charter, ATT, Comcast) then you could view many games on ESPN 3. Just check their website to view all of the available games. You may not get all of the games and some of them in my experience have been low quality and blocky resolution.
I have the application called PlayOn.tv (I paid the one-time fee for lifetime updates) which runs on my computer and allows me to stream ESPN 3 to any DLNA capable device (Smart TV, video streamers, game consoles, etc).
There are typically two or three NCAA football games per year for my team that are only available on ESPN 3 which is why I went this route.