Just in case you were wondering the sweep keeps the dream of .500 alive but just 2 losses ends it. Can the Nats go 5-1 or 6-0 to end the year? Sure. My feeling is that they'll be out of contention by the time we meet again on Monday. (of course I predicted the Braves and not the Cardinals as the WC so I'm biased.)
Ian Desmond hasn't slowed down a bit in September. (.284 / .308 / .443). That OBP is still remarkably terrible but you aren't looking for Desmond to be a stud at this point (at least I hope you aren't). You are looking for him to hold his own in the lineup. Since Mid-July he has been, with a decent average and ok pop.
Remember the Type B FA gamble that we all assumed was the reason to A) trade for Jonny Gomes b) not trade Laynce Nix? Yeah that's been a terrible move. Gomes has hit terribly since being regulated to pinch-hitter duties in late August (.154 / .281 / .192) and has played himself down to the border between Type Bs and nothings. Even if he made Type B, offering him arbitration looks like making a bad move worse. Laynce has hit poorly since the All-Star break (.204 / .274 / .359) and hasn't had an XBH in three weeks. He's got virtually no chance at ending up as a Type B. THIS IS WHY YOU TRADE A GUY LIKE NIX. (older guy outperforming what their plethora of historical stats would have you believe they should do). They are outperforming so you sell high on whatever you can get. By keeping him you not only do you not get some random young lottery-ticket of a player that you might get lucky on, but you also hurt your team as the guy plays through his likely decline. It's lose-lose. It's looking very much like Rizzo came up empty on pretty much every OF move this year (hell even Morse was only a beast while he was playing first, for whatever reason)