Colorado has found some momentum again, winning five of its past six games – all at home. However, the Rockies ended their last road trip with a 2-9 record.

The Pirates (37-70) still have the worst record in the NL and remain in the bottom five in most major statistical categories. But the Rockies are unlikely to take them as lightly as they did last week, when Pittsburgh won a three-game series at Coors Field.

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Rockies starter Aaron Cook, the franchise leader in wins, is 0-3 in his past three starts with a 13.98 ERA, putting his projected start Sunday against the Pirates in jeopardy. The likely replacement for Cook would be Jhoulys Chacin, who was 5-8 with a 4.04 ERA before being sent to Triple-A Colorado Springs following the activation of Jorge De La Rosa, expected to make his second start since coming off the disabled list Saturday. … Rockies outfielder Carlos Gonzalez has the fifth-best batting average in the majors the past month at .387. Gonzalez has 17 RBIs and seven home runs during that stretch.

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