i have used an IPTV service since 2016. But i don't just use it for sports, i use it for all channels, Sports is just a bonus.
It has a NFL package, and its basically just the local broadasts of games all put together. But if for some reason the feed is bad or not working, i can switch over to one of the other feeds since i can pretty much stream any local channel in the US. But its not for the weak or ones who aren't tech literate.
But i also have an Antenna for emergencies, but i haven't used it in a couple years.
But technically, it isn't illegal to stream any of it, it is only illegal for the one putting out the stream. its that nice grey area.. lol