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Per Jeff Wilson, the Texas Rangers have claimed RHP Ramon Aguero off of waivers from the Pittsburgh Pirates and optioned him to AAA, with Omar Beltre moving to the 60 day d.l.
I know nothing about Aguero, but I'm going to say for now, based solely on a WAG, that he's a reliever, throws hard, has command issues, and is a converted outfielder.
I will now go look up Aguero, and update this once I figure out who he is and what he does.
UPDATE -- Here is Aguero's B-R page. He is a reliever, he appears to have command issues, but he's not a converted outfielder.
Not sure what the story on his fastball is.