"There's some real material differences with his stuff," Sox general manager Chris Getz said Wednesday. "He added the sweeper, he got a better feel for his sinker, he changed his attack plan. And he more or less dominated over in the (Korea Baseball Organization)."
"We had some early spring training looks on him this year, and we liked what we saw, and during the season, as well," Getz said. "In further evaluation analytically, there were some indications of some upside here."
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