I had to laugh at Willie's suggestion that Soriano is maybe the most productive 2B in MLB history. Soriano loves to hit the long ball, and he certainly is adept at that. But he also K's with disturbing frequency and he is regarded as a liability in the field.
Better than Joe Morgan? Ryne Sandberg? Heck, I'd take Craig Biggio over him and maybe Jeff Kent, too.
As for whether he's been prepared to play OF: This is spring training. He just got to his team's camp, and the first thing they did was try to get him some work out there, now, when it doesn't count. He refused.
If he wanted to play 2B, he had all sorts of time to work on his defense and try to supplant Vidro. Doesn't look like the Nats think he made it that far.