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The Coors Effect


August 22, 2009 5:38 AM

Cook struggles, leaves early

When you try to pitch through pain, two things can happen: you're less effective, and mechanical breakdowns can lead to further injury.  Tonight both happened to Aaron Cook.

While we can't say for sure that Cook's sore shoulder was a result from him trying to pitch through the pain in his toe -- heck, we're not even 100 percent sure that his toe is still bothering him -- it's not out of the question that Cook compensated for the bad toe by altering his mechanics.  And if we don't know for sure that his toe is still bothering him, we do know that since Cook left a game in Philly on August 6, he hasn't been effective: 2.1 IP and 7 earned runs in an August 16 start against the Marlins, and 3 IP, 4 ER tonight.

Something's been wrong with Cook, and after this latest injury, it's possible that he will have to go on the DL.  The Rockies have pitching depth, and while Cook at 100 percent would be clearly better than most of the other options, Cook at 80 percent -- which he's probably been in his last two starts, and possibly before that -- is not a better pitcher than Jhoulys Chacin.

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