I guess I have misunderstood the question. I was thinking of this as best baseball performance, not most exciting or most memorable to Nats. Rendon's game and Scherzer's two (two!) games have not been bested by more than 5 players in the 100+ year history of baseball. These performances need no context. Twenty strikeouts, 6 for 6 with 10 RBI, Game score of 104. No qualifiers or explanations necessary.
That being said, I like everyone going over their favorite Nats performances. Especially since I am relatively new to the fan base. I like the history.