From the Shield's app store, it only has the MLB At Bat app, not MLB.TV. I've tried to add it to my Shield Google account through my laptop, but it says the app isn't allowed in my location. VPN doesn't correct this.
Has anyone gotten it to work? The Shield is listed as a compatible device on mlb.com. If so, can someone post a trustworthy apk file for mlb.tv?
The MLB at bat app is the app you want, you can login to MLB.tv in it.