I know Blalock had an OPS in the .600's away because I was looking at his stats when the trade rumors were coming up for Beckett, but I don't think he had a great OPS overall either, so I don't think it's him.
It's probably Soriano, but I'll take a guess and go with Dunn.
Edit: Forgot to think about it being a first rounder. Yeah, I'll go with Sori.
I did not like him as a first round pick in 05, so I am still weary of him. To his credit, he put up the numbers this year, but his 04 was bad enough to ruin any confidence I might have had in him as a first rounder. Still, you could look at 04 as the exception.
Basically, he is one of those type of picks that you do not feel confortable with in the first round but you do it anyway. You pick him because he is likely to perform. But unlike Pujols or A-Choke, he is not a guarantee to perform at near first round levels. If he gets dealt, we could see his numbers go down quite a bit.
If he gets dealt to some pitcher friendly place, then he loses a lot of value, but as long as he's in Texas, he's the #1 player at the thinnest position. And as of right now, while he's in Texas, the #s will be there at the end of the season, that's what counts. I see him somewhere between #12-18 overall, so a borderline 1st.