https://www.mlb.com/news/players-who-fans-love-to-hateI loved the linked article and think for the most part, it gets things right about the recent opposing player each team's fan base loves to hate.
For the NL Eaat, it says it is Bruce Whoreper or something like that for the Barves, the fishies, and the World Champ's fans.
Other players on mutliple fan base's s-list include A-Rod (Boston and Seattle) and Joey Bats (Os and Rangers). A couple of other great nameas on this list include AJ Pierzynski, Pedro, and Chase Utley.
So, for the Nats, do we agree it is Royce/ who would be the rest of the top3 or top 5, if you arer full of hate. No umps.
How about some other recent major hatables? This can be jerks, folks who spurned teams for FA, or guys who killed a team or that fans particularly enjoyed seeing fail.
I'd say for the Nats that somehow Chipper and Utley would be there for guys who never played for us.