Chicago Cubs' Matt Garza during a spring training baseball workout Thursday, Feb. 14, 2013, in Mesa, Ariz. (AP Photo/Morry Gash)
MESA, Ariz. — The spring optimism anybody might have had for a big Cubs’ turnaround season took a hit right below Matt Garza’s left shoulder blade. Throwing his first live batting practice session of the spring Sunday, the power-pitching right-hander got halfway through his schedule …
