I used to use ESPN on Xbox live to watch all of the ESPN stuff. Now most of the good games are either blacked out or you have to be subscribed to a cable provider to authorize ESPN3 \ XBOX Live ESPN. It's a bunch of BS. I watched a bunch of sports last year that way. If you really search on Google you can find any tv channel streaming live. You have to spend some time finding the best stream though. I just HDMI from the laptop to the TV as well. I can stand to watch a smaller feed when it's on the 46".
I just have antenna, I don't need all those cable channels. Would I like them? SURE! Do I like paying for all of those channels Heck No!
Just google ESPN Live Stream. Then find the one that has the best stream. Also make sure you have a good pop up blocker like Add Block Plus or those sites will overwhelm you!