The four teams left vying for World Series berths will face one of the most difficult challenges in recent memory to reach the championship round of the MLB postseason.
Neither league championship series will feature a day off, which means a team could play seven consecutive days in its fight to reach the Fall Classic.
The most stress caused by a week-long series will likely be on pitching staffs, and that could be a significant factor later in the series with the top starters being unable to start on short rest as much as they usually would.