Joel Sherman of the New York Post says the Colorado Rockies want to put Jhoulys Chacin back into the rotation, and so they are quietly shopping starting pitcher Aaron Cook. They are telling teams that they would either eat some dollars or take back a contract. Sherman adds,

Cook, though, is having his worst season since becoming a full-time starter in 2004 at 4-6 with a 4.78 ERA. Also, he is owed about $3 million on his $9 million contract for this season, $9.5 million next year and there is a mutual option in 2012 for $11 million or $500,000 buyout. However, if he is traded his base salary increases by $1 million in each season.

Just a couple of weeks ago, the Rockies were in buying mode, but after a four-game sweep by the Philadelphia Phillies, the team is now eight games out of first and 4 1/2 games out of the wild card. The team is starting to see so many problems spots on their offense. The Rockies have three games against the Pirates and then they open a three game series with the Cubs – all at home, so at least the schedule is to their advantage. If they can go on a win streak before the trade deadline, then they can get back to buying mode. Otherwise, expect the Rockies to sell off a few pieces.