I'm more an almost cord cutter. I went from every channel offered from Comcast, to no premium, to just standard, and now just limited basic. I'm on limited basic because I haven't mounted the antenna and need find the cable distribution box for the house. Why rewire the house when it's already been done. Then all I need to is run one line for the internet. Limited basic is around $22 a month in my area. I still want to see the local news and what not. I've been on this setup for around two years. If I cut cable TV, my internet bill will go up $10 a month., but I will still save $120 a year.
That said, I'm a bit of a sports addict. And for many people this is kind of the last barrier. First, you need to have a decent internet connection to get sports. Most sport leagues have online packages such as Major League Baseball's At Bat service. They all show out of market games. The costs of these packages typically range in the $100 to $300 range. There are some exception's such as the NHL right for $50, but that's more because of the lockout. Some services are for replays only such as the NFL Game Rewind; these services are much cheaper, usually around the $50 per season. There are some sports leauge's that don't because they either have TV contracts through the world such as WSBK motorcycle racing, or just behind the times.
A cheaper cost is to use stuff such as JustinTV, Ustream, and various other self broadcast services. There's other people who will rebroadcast games. There's no law, at least in the US for consuming games this way, only to provide it. The problem is the quality is inconsistent, the feed get cut off for copyright infringements, or there's no feed.
Next, I would recommend as internet service provider that gives WatchESPN (EPSN3). This service is only offered by EPSN to ISP's, so you not able to subscribe directly. There is some limited exception in the United Kingdom with the ESPN Player, but that's only for college sports. ESPN3 everyone who gets WatchESPN gets it. The other EPSN channels such as ESPN1, EPSN2, and ESPNU, are available if you have a TV subscription; obviously this doesn't apply to the topic, but if you have friend who's will to share their WatchESPN account, then it could be had. This would give you Sports Center. Another option, although not great, is some cellphone services give access to ESPN Mobile which shows live games on EPSN1 and a few other show like Pardon the Interuption and a truncated Sports Center. The only issue, the mobile apps don't usually allow HDMI out on mobile devices that are equipped with that ability. Although some people hack the apps.
Another issue is in regards to blackout rules. Most people probably fans of the local teams. Thus, the sport packages may not be well suited since most, if not all games, of the local teams are on local TV. There are solutions though. The best is using a VPN service. This allows you get an IP address that is outside of the home market. Thus, someone in New York can get one with an IP in China. What IP you need may depend if the game is just on local or national TV. This is an additional cost and ranges in the $8 to $15 a month depending on the service and how long of subscription. This also gives you access to services available outside your area such as the NFL Game Pass serivce for those in the US since it's not available within the US because of DirectTV's Sunday Ticket. You can also access other TV service's possibliy such as BBC's iPlayer, CatchUp TV, Hulu in Japan, and so forth. Depending on your service, you may be able to use on your mobile device. Sometimes, sports leagues will offer these online packages free in certain areas of the world, so if you get an IP there, it'll be free for you too.
As mentioned earlier, you may be able to use your mobile device as well. Some sports league include mobile access. Some will have packages that are just for mobile access are reduced prices. They usually don't include the extra access such at that that league's sport's channel. Some mobile carrier's include mobile access for no extra cost. Two examples in the US are Sprint for the NBA (all audio and games on ESPN) and Verizon and the NFL (out of market games and redzone). Blackout rules still remain. As earlier, usually there is a way to circumvent. Some a simple GPS spoofer does the trick. Others, you need to use a VPN. Some check both, and those circumstances a bit more tech savvy will be needed.
With all that said, realize that all the leagues have language in their terms of service (TOS) agreements about circumventing the blackouts. Generally, the TOS says the service will be cancel with no refund. Plus, they will charge an additional free, some as high as $250. They also include they may sue. Depending on your county's laws, this may or may not be criminally illegal. In the US, to consume is not a criminal offense. Unless you're using the service in a public forum, the odds of being catch are very low. And most don't seek league action unless you're a repeat offender.
This could save you significant money. It may not save a penny, but you'll watch exactly what you par for and nothing more. Personally, I use a VPN year round. I also subscribe to MLB, NHL, NBA, NHL, MotoGP, and get EPSN3. I was already subscribing to some of these before I went limited cable. So I basically save on the money I spend for cable TV. Plus, I'm happier to pay for what I watch, not that and 100 plus channels I don't. Good or bad, I actually watch more sports now than I did when I had full cable TV service.