Is it normal for a player entering their tenth year of professional baseball in the United States to still need an interpreter? It seems we've had younger players who speak basic English sooner in their careers. Everyone learns at their own pace, so not holding only to a standard of Juan Soto who early on could do interviews well.
And before I'm accused of double standards, I'd expect any Nationals coach or player development staffer to have basic Spanish skills.
A lesser prospect than Robles, Juan Soto, started learning English as soon as he got to the Nats.
