Oddly, AT&T TV has apparently decided that, as with NBA bubble games, it would rather carry the alternate NBCSN-CA feed (some dog show) than the preseason games. So I guess I'll go with ESPN over the clunky app or the replay at 11 PM.
Fortunately, if the upcoming guide is correct they WILL be showing the regular season games rather than pre-empt them for the infomercials on the alternate feed. So I guess there's that.