Some other notable guys from the Nats DSL team are Ivan Pinyero and Diomedes Eusebio.
Pinyero had a SO:BB ratio of 73:20 in in 69.2 IP, with a WHIP of 1.19. Eusebio led the DSL Nats in 2B (16), HR (6) and RBI (30), but had 21 errors playing mostly 3B. Pinyero is 19 and Eusebio is 18.
I was kind of surprised to see Wilmer Difo left off the instructional roster. He played well enough at DSL to earn a spot on the GCL team and was able to at least hold his own in 25 games there.