re: Question about streaming live sports

If I understand the question correctly, no, not just with your internet password.

So I basically have your setup with the highest ATT Uverse internet speed, however, in order to watch ESPN or FS1 or SEC Network, I got Playstation Vue.
You'll need a "provider" in order to login or stream these channels. You can't just login using your ATT Uverse Internet password and info. Gotta have a 3rd party account through something like PS Vue or SlingTV, etc.