MLB.TV is specifically advertised as not including playoff games. They have never included them. All postseason games are available on national TV, games which have never been included on MLB.TV. Given that, and the low price of the product, it's not reasonable to expect it to include playoff games. But good news: YouTube TV has every single postseason game (30-50 games, depending on how long each series goes), with DVR, for only $65. Edit: today’s game was even free nationwide on ABC if you had an antenna or access to Locast.