Aaron Cook’s Ground Ball Barometer Showing Great Predictive Value Against Yankees (Video)

Aaron Cook usually lets you knew pretty early how his outing is going to go.

The notorious sinkerballer gets the majority of his outs by way of grounders, so when teams are chopping the ball into the infield dirt against him, he’s going good. If they’re lifting it into the outfield — or out of the ballpark — then it’s clear he’s not doing well.

NESN Nation’s Dan Duquette is hoping that Cook can keep the ball on the ground late into this one. See why in the above video.

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