In the Cards Nationals series.
If Washington sweeps; the Cardinals then have a race on their hands and may have to burn their #1 before a 1 game playoff. Giving LA a chance to get back in it.
If the Cardinals sweep; the Reds have a great shot at the #1, and then all of the sudden the Nationals are actually in danger of worrying about the WildCard as opposed to the 1 seed, how fun would that be. If the race switched to 1 Reds, 2 Braves, 3 Giants, WC Nats hosting Cards.
For anyone else hoping for some drama on the last day before the playoffs, a sweep in the Nats Cards series needs to happen