I got on the waiting list around 9:55AM and was able to get tickets by 10:05AM. I could get up to 4 tickets in any section - I was surprised they had every section available. I bought 2 in 417, row E.
I am assuming for the WC or tie-breaker game, right? I'm thinking those were available because people don't think the Nats will have to play those at this point. The NLDS was gone by the time I got there.