This year is different.
So as one of the most important series between these neighboring ball clubs gets underway, the Patch sites in the Maryland area are curious: who are you pulling for in this year's Battle of the Beltway?
While we're at it, which team do you think stands the best chance of staying in the pennant race late into the season?
TELL US: Will you be going to Nationals Park this weekend? Are you an Orioles fan or a Nationals fan? Which team stands the best chance at maintaining its hot start? Leave a comment.