I don't remember a no-hitter against the Nats, and I can remember back to 1953...which covers some pretty awful teams '54-58 and '61-65. Watched Pascual carry a no-hitter into the 8th a couple of times, and Dick Bosman threw several one-hitters.
AND this game won't be a no-hitter, at least.
I think Bosman threw a no-hitter unfortunately for Cleveland(?)