I don't like that decision that just gave them their run.
Why, at this early stage of the game, intentionally walk the 8th batter in the lineup? The 8th batter isn't that good, that's why he's batting 8th. Get him out and then start the next inning with the pitcher leading off.
It's a percentage move, it gave the Nats a force at all three bags at the time... Just because the percentages favor the move, its no guarantee it will work.