When Aaron Cook struggled in spring training, it was chalked up to a veteran working on his pitches. When he struggled in the first two starts of the season, it was chalked up to a sinker-ball pitcher needing to get into a rhythm. After getting shelled for five runs in three innings in the Rockies 5-2 loss to the Nationals on Monday night, the answer is simple: Aaron Cook has lost his sinker ... http://bit.ly/cCGzHN
